90162638 has 24 divisors (see below), whose sum is σ = 145828512. Its totient is φ = 41784192.

The previous prime is 90162629. The next prime is 90162641. The reversal of 90162638 is 83626109.

It is a super-2 number, since 2×90162638² = 16258602582238088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90162598 and 90162607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32606 + ... + 35262.

It is an arithmetic number, because the mean of its divisors is an integer number (6076188).

Almost surely, 2^90162638 is an apocalyptic number.

90162638 is a deficient number, since it is larger than the sum of its proper divisors (55665874).

90162638 is a wasteful number, since it uses less digits than its factorization.

90162638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 90162638 is about 9495.4008867451. The cubic root of 90162638 is about 448.4102554391.

The spelling of 90162638 in words is "ninety million, one hundred sixty-two thousand, six hundred thirty-eight".