90878504 has 8 divisors (see below), whose sum is σ = 170397210. Its totient is φ = 45439248.

The previous prime is 90878477. The next prime is 90878507. The reversal of 90878504 is 40587809.

It can be written as a sum of positive squares in only one way, i.e., 65577604 + 25300900 = 8098^2 + 5030^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (90878507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5679899 + ... + 5679914.

Almost surely, 2^90878504 is an apocalyptic number.

It is an amenable number.

90878504 is a deficient number, since it is larger than the sum of its proper divisors (79518706).

90878504 is a wasteful number, since it uses less digits than its factorization.

90878504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11359819 (or 11359815 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 90878504 is about 9533.0217664705. The cubic root of 90878504 is about 449.5938788569.

The spelling of 90878504 in words is "ninety million, eight hundred seventy-eight thousand, five hundred four".