13875144 has 16 divisors (see below), whose sum is σ = 34687920. Its totient is φ = 4625040.

The previous prime is 13875139. The next prime is 13875151. The reversal of 13875144 is 44157831.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289042 + ... + 289089.

It is an arithmetic number, because the mean of its divisors is an integer number (2167995).

Almost surely, 2^13875144 is an apocalyptic number.

It is an amenable number.

13875144 is an abundant number, since it is smaller than the sum of its proper divisors (20812776).

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

13875144 is a wasteful number, since it uses less digits than its factorization.

13875144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578140 (or 578136 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 13875144 is about 3724.9354356821. The cubic root of 13875144 is about 240.2956079724.

The spelling of 13875144 in words is "thirteen million, eight hundred seventy-five thousand, one hundred forty-four".