13339720 has 16 divisors (see below), whose sum is σ = 30014460. Its totient is φ = 5335872.

The previous prime is 13339709. The next prime is 13339727. The reversal of 13339720 is 2793331.

It can be written as a sum of positive squares in 2 ways, for example, as 13147876 + 191844 = 3626^2 + 438^2 .

It is not an unprimeable number, because it can be changed into a prime (13339727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166707 + ... + 166786.

Almost surely, 2^13339720 is an apocalyptic number.

13339720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13339720 is an abundant number, since it is smaller than the sum of its proper divisors (16674740).

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

13339720 is a wasteful number, since it uses less digits than its factorization.

13339720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333504 (or 333500 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 13339720 is about 3652.3581423513. The cubic root of 13339720 is about 237.1640754090.

The spelling of 13339720 in words is "thirteen million, three hundred thirty-nine thousand, seven hundred twenty".