13872918 has 32 divisors (see below), whose sum is σ = 30070656. Its totient is φ = 4249728.

The previous prime is 13872917. The next prime is 13872919. The reversal of 13872918 is 81927831.

It is an interprime number because it is at equal distance from previous prime (13872917) and next prime (13872919).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13872917) 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, 2805 + ... + 5967.

It is an arithmetic number, because the mean of its divisors is an integer number (939708).

Almost surely, 2^13872918 is an apocalyptic number.

13872918 is an abundant number, since it is smaller than the sum of its proper divisors (16197738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13872918 is a wasteful number, since it uses less digits than its factorization.

13872918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3228.

The product of its digits is 24192, while the sum is 39.

The square root of 13872918 is about 3724.6366265718. The cubic root of 13872918 is about 240.2827570156.

The spelling of 13872918 in words is "thirteen million, eight hundred seventy-two thousand, nine hundred eighteen".