90057996 has 72 divisors (see below), whose sum is σ = 266249984. Its totient is φ = 25129440.

The previous prime is 90057991. The next prime is 90058009. The reversal of 90057996 is 69975009.

It is a super-2 number, since 2×90057996² = 16220885287072032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90057991) 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 23 ways as a sum of consecutive naturals, for example, 6681 + ... + 14991.

Almost surely, 2^90057996 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 90057996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133124992).

90057996 is an abundant number, since it is smaller than the sum of its proper divisors (176191988).

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

90057996 is a wasteful number, since it uses less digits than its factorization.

90057996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8371 (or 8366 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 90057996 is about 9489.8891458225. The cubic root of 90057996 is about 448.2367145603.

The spelling of 90057996 in words is "ninety million, fifty-seven thousand, nine hundred ninety-six".