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679460080 = 245131738431
BaseRepresentation
bin101000011111111…
…011110011110000
31202100112011000011
4220133323303300
52342420210310
6151231104304
722560213115
oct5037736360
91670464004
10679460080
113195a0462
1216b672094
13aa9ca2b0
146634c90c
153e9b678a
hex287fbcf0

679460080 has 80 divisors (see below), whose sum is σ = 1801384704. Its totient is φ = 236113920.

The previous prime is 679460069. The next prime is 679460081. The reversal of 679460080 is 80064976.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679460081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1536 + ... + 36895.

Almost surely, 2679460080 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 679460080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (900692352).

679460080 is an abundant number, since it is smaller than the sum of its proper divisors (1121924624).

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

679460080 is a wasteful number, since it uses less digits than its factorization.

679460080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38474 (or 38468 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 679460080 is about 26066.4550716050. The cubic root of 679460080 is about 879.1331339556.

The spelling of 679460080 in words is "six hundred seventy-nine million, four hundred sixty thousand, eighty".

Divisors: 1 2 4 5 8 10 13 16 17 20 26 34 40 52 65 68 80 85 104 130 136 170 208 221 260 272 340 442 520 680 884 1040 1105 1360 1768 2210 3536 4420 8840 17680 38431 76862 153724 192155 307448 384310 499603 614896 653327 768620 999206 1306654 1537240 1998412 2498015 2613308 3074480 3266635 3996824 4996030 5226616 6533270 7993648 8493251 9992060 10453232 13066540 16986502 19984120 26133080 33973004 39968240 42466255 52266160 67946008 84932510 135892016 169865020 339730040 679460080