90157612 has 24 divisors (see below), whose sum is σ = 160752816. Its totient is φ = 44233728.

The previous prime is 90157601. The next prime is 90157621. The reversal of 90157612 is 21675109.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94128 + ... + 95080.

It is an arithmetic number, because the mean of its divisors is an integer number (6698034).

Almost surely, 2^90157612 is an apocalyptic number.

It is an amenable number.

90157612 is a deficient number, since it is larger than the sum of its proper divisors (70595204).

90157612 is a wasteful number, since it uses less digits than its factorization.

90157612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 90157612 is about 9495.1362286173. The cubic root of 90157612 is about 448.4019232671.

The spelling of 90157612 in words is "ninety million, one hundred fifty-seven thousand, six hundred twelve".