90198122 has 24 divisors (see below), whose sum is σ = 158086080. Its totient is φ = 38484600.

The previous prime is 90198113. The next prime is 90198167. The reversal of 90198122 is 22189109.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21497 + ... + 25347.

It is an arithmetic number, because the mean of its divisors is an integer number (6586920).

Almost surely, 2^90198122 is an apocalyptic number.

90198122 is a deficient number, since it is larger than the sum of its proper divisors (67887958).

90198122 is a wasteful number, since it uses less digits than its factorization.

90198122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106 (or 4099 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 90198122 is about 9497.2691864557. The cubic root of 90198122 is about 448.4690724945.

The spelling of 90198122 in words is "ninety million, one hundred ninety-eight thousand, one hundred twenty-two".