22131404 has 12 divisors (see below), whose sum is σ = 39106704. Its totient is φ = 10958064.

The previous prime is 22131397. The next prime is 22131443. The reversal of 22131404 is 40413122.

It is a super-2 number, since 2×22131404² = 979598086022432, 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, 26447 + ... + 27270.

It is an arithmetic number, because the mean of its divisors is an integer number (3258892).

Almost surely, 2^22131404 is an apocalyptic number.

It is an amenable number.

22131404 is a deficient number, since it is larger than the sum of its proper divisors (16975300).

22131404 is a wasteful number, since it uses less digits than its factorization.

22131404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53824 (or 53822 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22131404 is about 4704.4026188242. The cubic root of 22131404 is about 280.7607035590.

Adding to 22131404 its reverse (40413122), we get a palindrome (62544526).

The spelling of 22131404 in words is "twenty-two million, one hundred thirty-one thousand, four hundred four".