90512880 has 40 divisors (see below), whose sum is σ = 280590672. Its totient is φ = 24136704.

The previous prime is 90512861. The next prime is 90512897. The reversal of 90512880 is 8821509.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188329 + ... + 188808.

Almost surely, 2^90512880 is an apocalyptic number.

It is an amenable number.

90512880 is an abundant number, since it is smaller than the sum of its proper divisors (190077792).

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

90512880 is a wasteful number, since it uses less digits than its factorization.

90512880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377153 (or 377147 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 90512880 is about 9513.8257289063. The cubic root of 90512880 is about 448.9901304537.

The spelling of 90512880 in words is "ninety million, five hundred twelve thousand, eight hundred eighty".