13857872 has 20 divisors (see below), whose sum is σ = 30685536. Its totient is φ = 5939040.

The previous prime is 13857871. The next prime is 13857881. The reversal of 13857872 is 27875831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13857871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61754 + ... + 61977.

Almost surely, 2^13857872 is an apocalyptic number.

It is an amenable number.

13857872 is an abundant number, since it is smaller than the sum of its proper divisors (16827664).

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

13857872 is a wasteful number, since it uses less digits than its factorization.

13857872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123746 (or 123740 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 13857872 is about 3722.6162842818. The cubic root of 13857872 is about 240.1958586392.

The spelling of 13857872 in words is "thirteen million, eight hundred fifty-seven thousand, eight hundred seventy-two".