22431404 has 12 divisors (see below), whose sum is σ = 39603144. Its totient is φ = 11116224.

The previous prime is 22431391. The next prime is 22431427. The reversal of 22431404 is 40413422.

22431404 is nontrivially palindromic in base 14.

It is a super-2 number, since 2×22431404² = 1006335770822432, which contains 22 as substring.

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, 24362 + ... + 25265.

It is an arithmetic number, because the mean of its divisors is an integer number (3300262).

Almost surely, 2^22431404 is an apocalyptic number.

It is an amenable number.

22431404 is a deficient number, since it is larger than the sum of its proper divisors (17171740).

22431404 is a wasteful number, since it uses less digits than its factorization.

22431404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49744 (or 49742 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22431404 is about 4736.1803175133. The cubic root of 22431404 is about 282.0236219168.

Adding to 22431404 its reverse (40413422), we get a palindrome (62844826).

The spelling of 22431404 in words is "twenty-two million, four hundred thirty-one thousand, four hundred four".