13431672 has 24 divisors (see below), whose sum is σ = 36377640. Its totient is φ = 4477200.

The previous prime is 13431667. The next prime is 13431679. The reversal of 13431672 is 27613431.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431679) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93204 + ... + 93347.

It is an arithmetic number, because the mean of its divisors is an integer number (1515735).

Almost surely, 2^13431672 is an apocalyptic number.

13431672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13431672 is an abundant number, since it is smaller than the sum of its proper divisors (22945968).

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

13431672 is a wasteful number, since it uses less digits than its factorization.

13431672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186563 (or 186556 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 13431672 is about 3664.9245558401. The cubic root of 13431672 is about 237.7077598468.

The spelling of 13431672 in words is "thirteen million, four hundred thirty-one thousand, six hundred seventy-two".