23939157 has 16 divisors (see below), whose sum is σ = 35163648. Its totient is φ = 14365680.

The previous prime is 23939147. The next prime is 23939173. The reversal of 23939157 is 75193932.

It is not a de Polignac number, because 23939157 - 2⁷ = 23939029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23939147) 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, 123 + ... + 6920.

It is an arithmetic number, because the mean of its divisors is an integer number (2197728).

Almost surely, 2^23939157 is an apocalyptic number.

It is an amenable number.

23939157 is a deficient number, since it is larger than the sum of its proper divisors (11224491).

23939157 is a wasteful number, since it uses less digits than its factorization.

23939157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160.

The product of its digits is 51030, while the sum is 39.

The square root of 23939157 is about 4892.7657822544. The cubic root of 23939157 is about 288.2059555940.

The spelling of 23939157 in words is "twenty-three million, nine hundred thirty-nine thousand, one hundred fifty-seven".