22431412 has 6 divisors (see below), whose sum is σ = 39254978. Its totient is φ = 11215704.

The previous prime is 22431391. The next prime is 22431427. The reversal of 22431412 is 21413422.

It can be written as a sum of positive squares in only one way, i.e., 14791716 + 7639696 = 3846^2 + 2764^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22431412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2803923 + ... + 2803930.

Almost surely, 2^22431412 is an apocalyptic number.

It is an amenable number.

22431412 is a deficient number, since it is larger than the sum of its proper divisors (16823566).

22431412 is a wasteful number, since it uses less digits than its factorization.

22431412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5607857 (or 5607855 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 22431412 is about 4736.1811620756. The cubic root of 22431412 is about 282.0236554440.

Adding to 22431412 its reverse (21413422), we get a palindrome (43844834).

It can be divided in two parts, 2243 and 1412, that added together give a triangular number (3655 = T₈₅).

The spelling of 22431412 in words is "twenty-two million, four hundred thirty-one thousand, four hundred twelve".