13156444 has 24 divisors (see below), whose sum is σ = 26391680. Its totient is φ = 5621616.

The previous prime is 13156439. The next prime is 13156447. The reversal of 13156444 is 44465131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13156447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14887 + ... + 15745.

Almost surely, 2^13156444 is an apocalyptic number.

13156444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13156444 is an abundant number, since it is smaller than the sum of its proper divisors (13235236).

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

13156444 is a wasteful number, since it uses less digits than its factorization.

13156444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417 (or 1415 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 13156444 is about 3627.1812747642. The cubic root of 13156444 is about 236.0729210646.

The spelling of 13156444 in words is "thirteen million, one hundred fifty-six thousand, four hundred forty-four".