90120528 has 30 divisors (see below), whose sum is σ = 252212714. Its totient is φ = 30040128.

The previous prime is 90120521. The next prime is 90120529. The reversal of 90120528 is 82502109.

It can be written as a sum of positive squares in only one way, i.e., 87834384 + 2286144 = 9372^2 + 1512^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90120521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312775 + ... + 313062.

Almost surely, 2^90120528 is an apocalyptic number.

It is an amenable number.

90120528 is an abundant number, since it is smaller than the sum of its proper divisors (162092186).

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

90120528 is a wasteful number, since it uses less digits than its factorization.

90120528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625851 (or 625842 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 90120528 is about 9493.1832385138. The cubic root of 90120528 is about 448.3404353277.

The spelling of 90120528 in words is "ninety million, one hundred twenty thousand, five hundred twenty-eight".