23157015 has 16 divisors (see below), whose sum is σ = 42344448. Its totient is φ = 10586016.

The previous prime is 23157011. The next prime is 23157019. The reversal of 23157015 is 51075132.

It is an interprime number because it is at equal distance from previous prime (23157011) and next prime (23157019).

It is not a de Polignac number, because 23157015 - 2² = 23157011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23157011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110167 + ... + 110376.

It is an arithmetic number, because the mean of its divisors is an integer number (2646528).

Almost surely, 2^23157015 is an apocalyptic number.

23157015 is a deficient number, since it is larger than the sum of its proper divisors (19187433).

23157015 is a wasteful number, since it uses less digits than its factorization.

23157015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220558.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 23157015 is about 4812.1736252966. The cubic root of 23157015 is about 285.0323755157.

The spelling of 23157015 in words is "twenty-three million, one hundred fifty-seven thousand, fifteen".