13557872 has 10 divisors (see below), whose sum is σ = 26268408. Its totient is φ = 6778928.

The previous prime is 13557827. The next prime is 13557883. The reversal of 13557872 is 27875531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 423668 + ... + 423699.

Almost surely, 2^13557872 is an apocalyptic number.

It is an amenable number.

13557872 is a deficient number, since it is larger than the sum of its proper divisors (12710536).

13557872 is an equidigital number, since it uses as much as digits as its factorization.

13557872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847375 (or 847369 counting only the distinct ones).

The product of its digits is 58800, while the sum is 38.

The square root of 13557872 is about 3682.1015738298. The cubic root of 13557872 is about 238.4499174785.

It can be divided in two parts, 13 and 557872, that multiplied together give a triangular number (7252336 = T₃₈₀₈).

The spelling of 13557872 in words is "thirteen million, five hundred fifty-seven thousand, eight hundred seventy-two".