90864324 has 18 divisors (see below), whose sum is σ = 229684910. Its totient is φ = 30288096.

The previous prime is 90864311. The next prime is 90864331. The reversal of 90864324 is 42346809.

It is a happy number.

90864324 is a `hidden beast` number, since 9 + 0 + 8 + 643 + 2 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 84052224 + 6812100 = 9168^2 + 2610^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2524009 = 90864324 / (9 + 0 + 8 + 6 + 4 + 3 + 2 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1261969 + ... + 1262040.

Almost surely, 2^90864324 is an apocalyptic number.

It is an amenable number.

90864324 is an abundant number, since it is smaller than the sum of its proper divisors (138820586).

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

90864324 is a wasteful number, since it uses less digits than its factorization.

90864324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524019 (or 2524014 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 90864324 is about 9532.2780068565. The cubic root of 90864324 is about 449.5704938886.

The spelling of 90864324 in words is "ninety million, eight hundred sixty-four thousand, three hundred twenty-four".