22571490 has 16 divisors (see below), whose sum is σ = 54171648. Its totient is φ = 6019056.

The previous prime is 22571473. The next prime is 22571491. The reversal of 22571490 is 9417522.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 752383 = 22571490 / (2 + 2 + 5 + 7 + 1 + 4 + 9 + 0).

It is not an unprimeable number, because it can be changed into a prime (22571491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376162 + ... + 376221.

It is an arithmetic number, because the mean of its divisors is an integer number (3385728).

Almost surely, 2^22571490 is an apocalyptic number.

22571490 is an abundant number, since it is smaller than the sum of its proper divisors (31600158).

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

22571490 is a wasteful number, since it uses less digits than its factorization.

22571490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752393.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 22571490 is about 4750.9462215437. The cubic root of 22571490 is about 282.6094910637.

The spelling of 22571490 in words is "twenty-two million, five hundred seventy-one thousand, four hundred ninety".