22122428 has 12 divisors (see below), whose sum is σ = 38814552. Its totient is φ = 11032560.

The previous prime is 22122427. The next prime is 22122461. The reversal of 22122428 is 82422122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122421) 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, 5378 + ... + 8553.

It is an arithmetic number, because the mean of its divisors is an integer number (3234546).

Almost surely, 2^22122428 is an apocalyptic number.

It is an amenable number.

22122428 is a deficient number, since it is larger than the sum of its proper divisors (16692124).

22122428 is a wasteful number, since it uses less digits than its factorization.

22122428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14332 (or 14330 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

The square root of 22122428 is about 4703.4485220953. The cubic root of 22122428 is about 280.7227416829.

The spelling of 22122428 in words is "twenty-two million, one hundred twenty-two thousand, four hundred twenty-eight".