90222576 has 60 divisors (see below), whose sum is σ = 239719032. Its totient is φ = 29240064.

The previous prime is 90222571. The next prime is 90222581. The reversal of 90222576 is 67522209.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90222571) and next prime (90222581).

It is a super-2 number, since 2×90222576² = 16280226440151552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90222571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65026 + ... + 66398.

Almost surely, 2^90222576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90222576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119859516).

90222576 is an abundant number, since it is smaller than the sum of its proper divisors (149496456).

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

90222576 is a wasteful number, since it uses less digits than its factorization.

90222576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458 (or 1415 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 90222576 is about 9498.5565219143. The cubic root of 90222576 is about 448.5095976241.

The spelling of 90222576 in words is "ninety million, two hundred twenty-two thousand, five hundred seventy-six".