90960840 has 64 divisors (see below), whose sum is σ = 303206400. Its totient is φ = 24255936.

The previous prime is 90960833. The next prime is 90960841. The reversal of 90960840 is 4806909.

90960840 is a `hidden beast` number, since 9 + 0 + 9 + 608 + 40 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 90960795 and 90960804.

It is not an unprimeable number, because it can be changed into a prime (90960841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41032 + ... + 43191.

It is an arithmetic number, because the mean of its divisors is an integer number (4737600).

Almost surely, 2^90960840 is an apocalyptic number.

90960840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90960840 is an abundant number, since it is smaller than the sum of its proper divisors (212245560).

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

90960840 is a wasteful number, since it uses less digits than its factorization.

90960840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84243 (or 84233 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 90960840 is about 9537.3392515942. The cubic root of 90960840 is about 449.7296153484.

The spelling of 90960840 in words is "ninety million, nine hundred sixty thousand, eight hundred forty".