15872423 has 6 divisors (see below), whose sum is σ = 18463896. Its totient is φ = 13604892.

The previous prime is 15872413. The next prime is 15872431. The reversal of 15872423 is 32427851.

It is not a de Polignac number, because 15872423 - 2⁸ = 15872167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15872423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15872413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161915 + ... + 162012.

It is an arithmetic number, because the mean of its divisors is an integer number (3077316).

Almost surely, 2^15872423 is an apocalyptic number.

15872423 is a deficient number, since it is larger than the sum of its proper divisors (2591473).

15872423 is an equidigital number, since it uses as much as digits as its factorization.

15872423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323941 (or 323934 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 15872423 is about 3984.0209587802. The cubic root of 15872423 is about 251.3126847051.

The spelling of 15872423 in words is "fifteen million, eight hundred seventy-two thousand, four hundred twenty-three".