90615222 has 48 divisors (see below), whose sum is σ = 200745792. Its totient is φ = 29533680.

The previous prime is 90615221. The next prime is 90615229. The reversal of 90615222 is 22251609.

It is a super-2 number, since 2×90615222² = 16422236916218568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90615221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 273597 + ... + 273927.

It is an arithmetic number, because the mean of its divisors is an integer number (4182204).

Almost surely, 2^90615222 is an apocalyptic number.

90615222 is an abundant number, since it is smaller than the sum of its proper divisors (110130570).

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

90615222 is a wasteful number, since it uses less digits than its factorization.

90615222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 90615222 is about 9519.2028027561. The cubic root of 90615222 is about 449.1592895840.

The spelling of 90615222 in words is "ninety million, six hundred fifteen thousand, two hundred twenty-two".