89915520 has 64 divisors (see below), whose sum is σ = 286611840. Its totient is φ = 23976960.

The previous prime is 89915519. The next prime is 89915521. The reversal of 89915520 is 2551998.

It is an interprime number because it is at equal distance from previous prime (89915519) and next prime (89915521).

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (89915521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21496 + ... + 25335.

It is an arithmetic number, because the mean of its divisors is an integer number (4478310).

Almost surely, 2^89915520 is an apocalyptic number.

89915520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89915520 is an abundant number, since it is smaller than the sum of its proper divisors (196696320).

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

89915520 is a wasteful number, since it uses less digits than its factorization.

89915520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46853 (or 46841 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 89915520 is about 9482.3794482187. The cubic root of 89915520 is about 448.0002125849. Note that the first 3 decimals are identical.

The spelling of 89915520 in words is "eighty-nine million, nine hundred fifteen thousand, five hundred twenty".