90767520 has 96 divisors (see below), whose sum is σ = 317701440. Its totient is φ = 24203520.

The previous prime is 90767497. The next prime is 90767531. The reversal of 90767520 is 2576709.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6186 + ... + 14825.

It is an arithmetic number, because the mean of its divisors is an integer number (3309390).

Almost surely, 2^90767520 is an apocalyptic number.

90767520 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90767520 is an abundant number, since it is smaller than the sum of its proper divisors (226933920).

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

90767520 is a wasteful number, since it uses less digits than its factorization.

90767520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21035 (or 21021 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 90767520 is about 9527.1989587706. The cubic root of 90767520 is about 449.4107843922.

The spelling of 90767520 in words is "ninety million, seven hundred sixty-seven thousand, five hundred twenty".