22742574 has 16 divisors (see below), whose sum is σ = 45936720. Its totient is φ = 7505600.

The previous prime is 22742557. The next prime is 22742611. The reversal of 22742574 is 47524722.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18159 + ... + 19370.

It is an arithmetic number, because the mean of its divisors is an integer number (2871045).

Almost surely, 2^22742574 is an apocalyptic number.

22742574 is an abundant number, since it is smaller than the sum of its proper divisors (23194146).

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

22742574 is a wasteful number, since it uses less digits than its factorization.

22742574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37635.

The product of its digits is 31360, while the sum is 33.

The square root of 22742574 is about 4768.9174872292. The cubic root of 22742574 is about 283.3217216310.

The spelling of 22742574 in words is "twenty-two million, seven hundred forty-two thousand, five hundred seventy-four".