22040912 has 20 divisors (see below), whose sum is σ = 44952480. Its totient is φ = 10440288.

The previous prime is 22040911. The next prime is 22040929. The reversal of 22040912 is 21904022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35948 + ... + 36555.

It is an arithmetic number, because the mean of its divisors is an integer number (2247624).

Almost surely, 2^22040912 is an apocalyptic number.

It is an amenable number.

22040912 is an abundant number, since it is smaller than the sum of its proper divisors (22911568).

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

22040912 is a wasteful number, since it uses less digits than its factorization.

22040912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72530 (or 72524 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 22040912 is about 4694.7749679830. The cubic root of 22040912 is about 280.3775179827.

Adding to 22040912 its reverse (21904022), we get a palindrome (43944934).

The spelling of 22040912 in words is "twenty-two million, forty thousand, nine hundred twelve".