13151232 has 66 divisors (see below), whose sum is σ = 38000508. Its totient is φ = 4380672.

The previous prime is 13151227. The next prime is 13151233. The reversal of 13151232 is 23215131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13151233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8503 + ... + 9929.

Almost surely, 2^13151232 is an apocalyptic number.

13151232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13151232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19000254).

13151232 is an abundant number, since it is smaller than the sum of its proper divisors (24849276).

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

13151232 is a wasteful number, since it uses less digits than its factorization.

13151232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453 (or 1432 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 13151232 is about 3626.4627393646. The cubic root of 13151232 is about 236.0417430710.

Adding to 13151232 its reverse (23215131), we get a palindrome (36366363).

The spelling of 13151232 in words is "thirteen million, one hundred fifty-one thousand, two hundred thirty-two".