90196218 has 24 divisors (see below), whose sum is σ = 223343328. Its totient is φ = 25770312.

The previous prime is 90196201. The next prime is 90196229. The reversal of 90196218 is 81269109.

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, 357796 + ... + 358047.

It is an arithmetic number, because the mean of its divisors is an integer number (9305972).

Almost surely, 2^90196218 is an apocalyptic number.

90196218 is an abundant number, since it is smaller than the sum of its proper divisors (133147110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90196218 is a wasteful number, since it uses less digits than its factorization.

90196218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715858 (or 715855 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 90196218 is about 9497.1689465861. The cubic root of 90196218 is about 448.4659168814.

The spelling of 90196218 in words is "ninety million, one hundred ninety-six thousand, two hundred eighteen".