90072896 has 14 divisors (see below), whose sum is σ = 178738530. Its totient is φ = 45036416.

The previous prime is 90072889. The next prime is 90072929. The reversal of 90072896 is 69827009.

It can be written as a sum of positive squares in only one way, i.e., 60217600 + 29855296 = 7760^2 + 5464^2 .

It is a super-2 number, since 2×90072896² = 16226253187653632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703631 + ... + 703758.

Almost surely, 2^90072896 is an apocalyptic number.

It is an amenable number.

90072896 is a deficient number, since it is larger than the sum of its proper divisors (88665634).

90072896 is a wasteful number, since it uses less digits than its factorization.

90072896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407401 (or 1407391 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 90072896 is about 9490.6741594051. The cubic root of 90072896 is about 448.2614332936.

The spelling of 90072896 in words is "ninety million, seventy-two thousand, eight hundred ninety-six".