13872156 has 12 divisors (see below), whose sum is σ = 32368392. Its totient is φ = 4624048.

The previous prime is 13872137. The next prime is 13872169. The reversal of 13872156 is 65127831.

13872156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 577995 + ... + 578018.

It is an arithmetic number, because the mean of its divisors is an integer number (2697366).

Almost surely, 2^13872156 is an apocalyptic number.

It is an amenable number.

13872156 is an abundant number, since it is smaller than the sum of its proper divisors (18496236).

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

13872156 is a wasteful number, since it uses less digits than its factorization.

13872156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156020 (or 1156018 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 13872156 is about 3724.5343333093. The cubic root of 13872156 is about 240.2783575851.

Adding to 13872156 its reverse (65127831), we get a palindrome (78999987).

It can be divided in two parts, 13872 and 156, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 13872156 in words is "thirteen million, eight hundred seventy-two thousand, one hundred fifty-six".