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80617902 = 2313436317
BaseRepresentation
bin1001100111000…
…10000110101110
312121200210222020
410303202012232
5131114233102
611555531010
71666145421
oct463420656
9177623866
1080617902
1141563472
1222bb9a66
1313918701
14a9c79b8
157126bbc
hex4ce21ae

80617902 has 8 divisors (see below), whose sum is σ = 161235816. Its totient is φ = 26872632.

The previous prime is 80617879. The next prime is 80617903. The reversal of 80617902 is 20971608.

It is a sphenic number, since it is the product of 3 distinct primes.

80617902 is an admirable number.

It is a super-2 number, since 2×806179022 = 12998492245763208, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80617903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6718153 + ... + 6718164.

It is an arithmetic number, because the mean of its divisors is an integer number (20154477).

Almost surely, 280617902 is an apocalyptic number.

80617902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

80617902 is a wasteful number, since it uses less digits than its factorization.

80617902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13436322.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 80617902 is about 8978.7472400107. The cubic root of 80617902 is about 431.9934519755.

The spelling of 80617902 in words is "eighty million, six hundred seventeen thousand, nine hundred two".

Divisors: 1 2 3 6 13436317 26872634 40308951 80617902