22979428 has 12 divisors (see below), whose sum is σ = 41069952. Its totient is φ = 11245160.

The previous prime is 22979423. The next prime is 22979431. The reversal of 22979428 is 82497922.

It is a super-2 number, since 2×22979428² = 1056108222414368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22979423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60928 + ... + 61303.

It is an arithmetic number, because the mean of its divisors is an integer number (3422496).

Almost surely, 2^22979428 is an apocalyptic number.

It is an amenable number.

22979428 is a deficient number, since it is larger than the sum of its proper divisors (18090524).

22979428 is a wasteful number, since it uses less digits than its factorization.

22979428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122282 (or 122280 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 22979428 is about 4793.6862642438. The cubic root of 22979428 is about 284.3018842419.

The spelling of 22979428 in words is "twenty-two million, nine hundred seventy-nine thousand, four hundred twenty-eight".