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80231808 = 273432113
BaseRepresentation
bin1001100100000…
…11110110000000
312120222012100110
410302003312000
5131014404213
611543351320
71662646656
oct462036600
9176865313
1080231808
114131a388
1222a52540
1313811a57
14a926dd6
15709c5c3
hex4c83d80

80231808 has 96 divisors (see below), whose sum is σ = 220118040. Its totient is φ = 25890816.

The previous prime is 80231803. The next prime is 80231819. The reversal of 80231808 is 80813208.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80231803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709960 + ... + 710072.

Almost surely, 280231808 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 80231808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110059020).

80231808 is an abundant number, since it is smaller than the sum of its proper divisors (139886232).

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

80231808 is a wasteful number, since it uses less digits than its factorization.

80231808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 80231808 is about 8957.2209976086. The cubic root of 80231808 is about 431.3027160090.

The spelling of 80231808 in words is "eighty million, two hundred thirty-one thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 43 48 64 86 96 113 128 129 172 192 226 258 339 344 384 452 516 678 688 904 1032 1356 1376 1808 1849 2064 2712 2752 3616 3698 4128 4859 5424 5504 5547 7232 7396 8256 9718 10848 11094 14464 14577 14792 16512 19436 21696 22188 29154 29584 38872 43392 44376 58308 59168 77744 88752 116616 118336 155488 177504 208937 233232 236672 310976 355008 417874 466464 621952 626811 710016 835748 932928 1253622 1671496 1865856 2507244 3342992 5014488 6685984 10028976 13371968 20057952 26743936 40115904 80231808