90678900 has 72 divisors (see below), whose sum is σ = 282558304. Its totient is φ = 22320000.

The previous prime is 90678893. The next prime is 90678923. The reversal of 90678900 is 987609.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7726 + ... + 15525.

Almost surely, 2^90678900 is an apocalyptic number.

It is an amenable number.

90678900 is an abundant number, since it is smaller than the sum of its proper divisors (191879404).

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

90678900 is a wasteful number, since it uses less digits than its factorization.

90678900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23281 (or 23274 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 90678900 is about 9522.5469282120. The cubic root of 90678900 is about 449.2644774598.

The spelling of 90678900 in words is "ninety million, six hundred seventy-eight thousand, nine hundred".