13299972 has 36 divisors (see below), whose sum is σ = 36101520. Its totient is φ = 3799824.

The previous prime is 13299971. The next prime is 13299973. The reversal of 13299972 is 27999231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13299971) and next prime (13299973).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (13299971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10722 + ... + 11897.

It is an arithmetic number, because the mean of its divisors is an integer number (1002820).

Almost surely, 2^13299972 is an apocalyptic number.

13299972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13299972 is an abundant number, since it is smaller than the sum of its proper divisors (22801548).

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

13299972 is a wasteful number, since it uses less digits than its factorization.

13299972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22640 (or 22631 counting only the distinct ones).

The product of its digits is 61236, while the sum is 42.

The square root of 13299972 is about 3646.9126669006. The cubic root of 13299972 is about 236.9282839500.

The spelling of 13299972 in words is "thirteen million, two hundred ninety-nine thousand, nine hundred seventy-two".