22431764 has 12 divisors (see below), whose sum is σ = 39616500. Its totient is φ = 11112768.

The previous prime is 22431757. The next prime is 22431781. The reversal of 22431764 is 46713422.

It can be written as a sum of positive squares in 2 ways, for example, as 11276164 + 11155600 = 3358^2 + 3340^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25289 + ... + 26160.

It is an arithmetic number, because the mean of its divisors is an integer number (3301375).

Almost surely, 2^22431764 is an apocalyptic number.

It is an amenable number.

22431764 is a deficient number, since it is larger than the sum of its proper divisors (17184736).

22431764 is a wasteful number, since it uses less digits than its factorization.

22431764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51562 (or 51560 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 22431764 is about 4736.2183226705. The cubic root of 22431764 is about 282.0251306343.

The spelling of 22431764 in words is "twenty-two million, four hundred thirty-one thousand, seven hundred sixty-four".