90637628 has 12 divisors (see below), whose sum is σ = 158707920. Its totient is φ = 45292512.

The previous prime is 90637627. The next prime is 90637663. The reversal of 90637628 is 82673609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90637627) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2600 + ... + 13712.

It is an arithmetic number, because the mean of its divisors is an integer number (13225660).

Almost surely, 2^90637628 is an apocalyptic number.

It is an amenable number.

90637628 is a deficient number, since it is larger than the sum of its proper divisors (68070292).

90637628 is a wasteful number, since it uses less digits than its factorization.

90637628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13156 (or 13154 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 90637628 is about 9520.3796142801. The cubic root of 90637628 is about 449.1963070352.

The spelling of 90637628 in words is "ninety million, six hundred thirty-seven thousand, six hundred twenty-eight".