22140404 has 24 divisors (see below), whose sum is σ = 45520608. Its totient is φ = 9289440.

The previous prime is 22140383. The next prime is 22140439. The reversal of 22140404 is 40404122.

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, 18782 + ... + 19925.

It is an arithmetic number, because the mean of its divisors is an integer number (1896692).

Almost surely, 2^22140404 is an apocalyptic number.

It is an amenable number.

22140404 is an abundant number, since it is smaller than the sum of its proper divisors (23380204).

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

22140404 is a wasteful number, since it uses less digits than its factorization.

22140404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38735 (or 38733 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 22140404 is about 4705.3590723769. The cubic root of 22140404 is about 280.7987566334.

Adding to 22140404 its reverse (40404122), we get a palindrome (62544526).

The spelling of 22140404 in words is "twenty-two million, one hundred forty thousand, four hundred four".