13299640 has 32 divisors (see below), whose sum is σ = 30073680. Its totient is φ = 5293312.

The previous prime is 13299619. The next prime is 13299641. The reversal of 13299640 is 4699231.

It is a junction number, because it is equal to n+sod(n) for n = 13299596 and 13299605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13299641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8607 + ... + 10033.

Almost surely, 2^13299640 is an apocalyptic number.

13299640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13299640 is an abundant number, since it is smaller than the sum of its proper divisors (16774040).

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

13299640 is a wasteful number, since it uses less digits than its factorization.

13299640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 13299640 is about 3646.8671486634. The cubic root of 13299640 is about 236.9263124961.

The spelling of 13299640 in words is "thirteen million, two hundred ninety-nine thousand, six hundred forty".