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768466080 = 253255310069
BaseRepresentation
bin101101110011011…
…101110010100000
31222120000010021200
4231303131302200
53033211403310
6204130521200
725020565614
oct5563356240
91876003250
10768466080
11364862a38
12195436200
13c3291975
14740bb344
15476e89c0
hex2dcddca0

768466080 has 144 divisors (see below), whose sum is σ = 2672134920. Its totient is φ = 201037824.

The previous prime is 768465989. The next prime is 768466103. The reversal of 768466080 is 80664867.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 605750544 + 162715536 = 24612^2 + 12756^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×7684660802 = 1181080232221132800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71286 + ... + 81354.

Almost surely, 2768466080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 768466080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1336067460).

768466080 is an abundant number, since it is smaller than the sum of its proper divisors (1903668840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

768466080 is a wasteful number, since it uses less digits than its factorization.

768466080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10143 (or 10132 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 768466080 is about 27721.2207523406. The cubic root of 768466080 is about 915.9566095018.

The spelling of 768466080 in words is "seven hundred sixty-eight million, four hundred sixty-six thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 53 60 72 80 90 96 106 120 144 159 160 180 212 240 265 288 318 360 424 477 480 530 636 720 795 848 954 1060 1272 1440 1590 1696 1908 2120 2385 2544 3180 3816 4240 4770 5088 6360 7632 8480 9540 10069 12720 15264 19080 20138 25440 30207 38160 40276 50345 60414 76320 80552 90621 100690 120828 151035 161104 181242 201380 241656 302070 322208 362484 402760 453105 483312 533657 604140 724968 805520 906210 966624 1067314 1208280 1449936 1600971 1611040 1812420 2134628 2416560 2668285 2899872 3201942 3624840 4269256 4802913 4833120 5336570 6403884 7249680 8004855 8538512 9605826 10673140 12807768 14499360 16009710 17077024 19211652 21346280 24014565 25615536 32019420 38423304 42692560 48029130 51231072 64038840 76846608 85385120 96058260 128077680 153693216 192116520 256155360 384233040 768466080