90072908 has 12 divisors (see below), whose sum is σ = 157715880. Its totient is φ = 45011232.

The previous prime is 90072889. The next prime is 90072929. The reversal of 90072908 is 80927009.

It is a super-2 number, since 2×90072908² = 16226257511152928, which contains 22 as substring.

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, 3383 + ... + 13841.

It is an arithmetic number, because the mean of its divisors is an integer number (13142990).

Almost surely, 2^90072908 is an apocalyptic number.

It is an amenable number.

90072908 is a deficient number, since it is larger than the sum of its proper divisors (67642972).

90072908 is a wasteful number, since it uses less digits than its factorization.

90072908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12616 (or 12614 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 90072908 is about 9490.6747916047. The cubic root of 90072908 is about 448.2614532002.

The spelling of 90072908 in words is "ninety million, seventy-two thousand, nine hundred eight".