90205028 has 12 divisors (see below), whose sum is σ = 159064752. Its totient is φ = 44757960.

The previous prime is 90204979. The next prime is 90205067. The reversal of 90205028 is 82050209.

It is a junction number, because it is equal to n+sod(n) for n = 90204988 and 90205006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85550 + ... + 86597.

It is an arithmetic number, because the mean of its divisors is an integer number (13255396).

Almost surely, 2^90205028 is an apocalyptic number.

It is an amenable number.

90205028 is a deficient number, since it is larger than the sum of its proper divisors (68859724).

90205028 is a wasteful number, since it uses less digits than its factorization.

90205028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172282 (or 172280 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 90205028 is about 9497.6327576928. The cubic root of 90205028 is about 448.4805178487.

The spelling of 90205028 in words is "ninety million, two hundred five thousand, twenty-eight".