23872137 has 16 divisors (see below), whose sum is σ = 33360000. Its totient is φ = 15155712.

The previous prime is 23872129. The next prime is 23872153. The reversal of 23872137 is 73127832.

It is not a de Polignac number, because 23872137 - 2³ = 23872129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23872098 and 23872107.

It is not an unprimeable number, because it can be changed into a prime (23872157) 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, 18489 + ... + 19737.

It is an arithmetic number, because the mean of its divisors is an integer number (2085000).

Almost surely, 2^23872137 is an apocalyptic number.

It is an amenable number.

23872137 is a deficient number, since it is larger than the sum of its proper divisors (9487863).

23872137 is a wasteful number, since it uses less digits than its factorization.

23872137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552.

The product of its digits is 14112, while the sum is 33.

The square root of 23872137 is about 4885.9120949931. The cubic root of 23872137 is about 287.9367506745.

Adding to 23872137 its reverse (73127832), we get a palindrome (96999969).

The spelling of 23872137 in words is "twenty-three million, eight hundred seventy-two thousand, one hundred thirty-seven".