22923157 has 12 divisors (see below), whose sum is σ = 25382700. Its totient is φ = 20628608.

The previous prime is 22923143. The next prime is 22923161. The reversal of 22923157 is 75132922.

It can be written as a sum of positive squares in 2 ways, for example, as 19704721 + 3218436 = 4439^2 + 1794^2 .

It is not a de Polignac number, because 22923157 - 2²³ = 14534549 is a prime.

It is a super-2 number, since 2×22923157² = 1050942253693298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22923127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7719 + ... + 10267.

It is an arithmetic number, because the mean of its divisors is an integer number (2115225).

Almost surely, 2^22923157 is an apocalyptic number.

It is an amenable number.

22923157 is a deficient number, since it is larger than the sum of its proper divisors (2459543).

22923157 is a wasteful number, since it uses less digits than its factorization.

22923157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612 (or 2589 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 22923157 is about 4787.8133839990. The cubic root of 22923157 is about 284.0696326315.

The spelling of 22923157 in words is "twenty-two million, nine hundred twenty-three thousand, one hundred fifty-seven".