90128816 has 10 divisors (see below), whose sum is σ = 174624612. Its totient is φ = 45064400.

The previous prime is 90128791. The next prime is 90128893. The reversal of 90128816 is 61882109.

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, 2816510 + ... + 2816541.

Almost surely, 2^90128816 is an apocalyptic number.

It is an amenable number.

90128816 is a deficient number, since it is larger than the sum of its proper divisors (84495796).

90128816 is a wasteful number, since it uses less digits than its factorization.

90128816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633059 (or 5633053 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 90128816 is about 9493.6197522336. The cubic root of 90128816 is about 448.3541788913.

The spelling of 90128816 in words is "ninety million, one hundred twenty-eight thousand, eight hundred sixteen".