13312740 has 96 divisors (see below), whose sum is σ = 44110080. Its totient is φ = 2935296.

The previous prime is 13312727. The next prime is 13312753. The reversal of 13312740 is 4721331.

It is an interprime number because it is at equal distance from previous prime (13312727) and next prime (13312753).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 11634 + ... + 12726.

It is an arithmetic number, because the mean of its divisors is an integer number (459480).

Almost surely, 2^13312740 is an apocalyptic number.

13312740 is a gapful number since it is divisible by the number (10) 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 13312740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22055040).

13312740 is an abundant number, since it is smaller than the sum of its proper divisors (30797340).

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

13312740 is a wasteful number, since it uses less digits than its factorization.

13312740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 13312740 is about 3648.6627687414. The cubic root of 13312740 is about 237.0040769118.

The spelling of 13312740 in words is "thirteen million, three hundred twelve thousand, seven hundred forty".