90523902 has 32 divisors (see below), whose sum is σ = 207212544. Its totient is φ = 25826400.

The previous prime is 90523871. The next prime is 90523913. The reversal of 90523902 is 20932509.

It is a self number, because there is not a number n which added to its sum of digits gives 90523902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41827 + ... + 43937.

It is an arithmetic number, because the mean of its divisors is an integer number (6475392).

Almost surely, 2^90523902 is an apocalyptic number.

90523902 is an abundant number, since it is smaller than the sum of its proper divisors (116688642).

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

90523902 is a wasteful number, since it uses less digits than its factorization.

90523902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 90523902 is about 9514.4049735125. The cubic root of 90523902 is about 449.0083546311.

The spelling of 90523902 in words is "ninety million, five hundred twenty-three thousand, nine hundred two".