23157244 has 24 divisors (see below), whose sum is σ = 44332848. Its totient is φ = 10496640.

The previous prime is 23157241. The next prime is 23157259. The reversal of 23157244 is 44275132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23157241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26722 + ... + 27574.

It is an arithmetic number, because the mean of its divisors is an integer number (1847202).

Almost surely, 2^23157244 is an apocalyptic number.

It is an amenable number.

23157244 is a deficient number, since it is larger than the sum of its proper divisors (21175604).

23157244 is a wasteful number, since it uses less digits than its factorization.

23157244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485 (or 1483 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 23157244 is about 4812.1974190592. The cubic root of 23157244 is about 285.0333150754.

It can be divided in two parts, 2315 and 7244, that added together give a palindrome (9559).

The spelling of 23157244 in words is "twenty-three million, one hundred fifty-seven thousand, two hundred forty-four".