23990157 has 12 divisors (see below), whose sum is σ = 34708960. Its totient is φ = 15967368.

The previous prime is 23990143. The next prime is 23990159. The reversal of 23990157 is 75109932.

It is not a de Polignac number, because 23990157 - 2¹⁸ = 23728013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23990159) 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, 4848 + ... + 8454.

Almost surely, 2^23990157 is an apocalyptic number.

It is an amenable number.

23990157 is a deficient number, since it is larger than the sum of its proper divisors (10718803).

23990157 is a wasteful number, since it uses less digits than its factorization.

23990157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4352 (or 4349 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 23990157 is about 4897.9747855619. The cubic root of 23990157 is about 288.4104751624.

The spelling of 23990157 in words is "twenty-three million, nine hundred ninety thousand, one hundred fifty-seven".