22939257 has 16 divisors (see below), whose sum is σ = 34818048. Its totient is φ = 13297680.

The previous prime is 22939249. The next prime is 22939277. The reversal of 22939257 is 75293922.

It is not a de Polignac number, because 22939257 - 2³ = 22939249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22939207) 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 15 ways as a sum of consecutive naturals, for example, 14353 + ... + 15870.

It is an arithmetic number, because the mean of its divisors is an integer number (2176128).

Almost surely, 2^22939257 is an apocalyptic number.

It is an amenable number.

22939257 is a deficient number, since it is larger than the sum of its proper divisors (11878791).

22939257 is a wasteful number, since it uses less digits than its factorization.

22939257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30260.

The product of its digits is 68040, while the sum is 39.

The square root of 22939257 is about 4789.4944409614. The cubic root of 22939257 is about 284.1361221755.

The spelling of 22939257 in words is "twenty-two million, nine hundred thirty-nine thousand, two hundred fifty-seven".