22971428 has 12 divisors (see below), whose sum is σ = 40425840. Its totient is φ = 11421192.

The previous prime is 22971407. The next prime is 22971449. The reversal of 22971428 is 82417922.

It is an interprime number because it is at equal distance from previous prime (22971407) and next prime (22971449).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 15326 + ... + 16757.

It is an arithmetic number, because the mean of its divisors is an integer number (3368820).

Almost surely, 2^22971428 is an apocalyptic number.

It is an amenable number.

22971428 is a deficient number, since it is larger than the sum of its proper divisors (17454412).

22971428 is a wasteful number, since it uses less digits than its factorization.

22971428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32266 (or 32264 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 22971428 is about 4792.8517606953. The cubic root of 22971428 is about 284.2688883660.

The spelling of 22971428 in words is "twenty-two million, nine hundred seventy-one thousand, four hundred twenty-eight".