13997232 has 40 divisors (see below), whose sum is σ = 40178480. Its totient is φ = 4665600.

The previous prime is 13997201. The next prime is 13997233. The reversal of 13997232 is 23279931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13997233) 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 7 ways as a sum of consecutive naturals, for example, 15769 + ... + 16632.

It is an arithmetic number, because the mean of its divisors is an integer number (1004462).

Almost surely, 2^13997232 is an apocalyptic number.

13997232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13997232 is an abundant number, since it is smaller than the sum of its proper divisors (26181248).

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

13997232 is a wasteful number, since it uses less digits than its factorization.

13997232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32418 (or 32406 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 13997232 is about 3741.2874789302. The cubic root of 13997232 is about 240.9983413854.

The spelling of 13997232 in words is "thirteen million, nine hundred ninety-seven thousand, two hundred thirty-two".