90222472 has 8 divisors (see below), whose sum is σ = 169167150. Its totient is φ = 45111232.

The previous prime is 90222437. The next prime is 90222499. The reversal of 90222472 is 27422209.

It can be written as a sum of positive squares in only one way, i.e., 90136036 + 86436 = 9494^2 + 294^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 90222472.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5638897 + ... + 5638912.

Almost surely, 2^90222472 is an apocalyptic number.

It is an amenable number.

90222472 is a deficient number, since it is larger than the sum of its proper divisors (78944678).

90222472 is a wasteful number, since it uses less digits than its factorization.

90222472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11277815 (or 11277811 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 90222472 is about 9498.5510473967. The cubic root of 90222472 is about 448.5094252910.

The spelling of 90222472 in words is "ninety million, two hundred twenty-two thousand, four hundred seventy-two".