90172726204 has 96 divisors (see below), whose sum is σ = 184927712256. Its totient is φ = 38017351680.

The previous prime is 90172726181. The next prime is 90172726243. The reversal of 90172726204 is 40262727109.

It is a super-2 number, since 2×90172726204² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28743324 + ... + 28746460.

It is an arithmetic number, because the mean of its divisors is an integer number (1926330336).

Almost surely, 2^90172726204 is an apocalyptic number.

It is an amenable number.

90172726204 is an abundant number, since it is smaller than the sum of its proper divisors (94754986052).

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

90172726204 is a wasteful number, since it uses less digits than its factorization.

90172726204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715 (or 3713 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 90172726204 in words is "ninety billion, one hundred seventy-two million, seven hundred twenty-six thousand, two hundred four".