13309760 has 28 divisors (see below), whose sum is σ = 31694628. Its totient is φ = 5323776.

The previous prime is 13309739. The next prime is 13309771. The reversal of 13309760 is 6790331.

It can be written as a sum of positive squares in 2 ways, for example, as 3625216 + 9684544 = 1904^2 + 3112^2 .

It is a super-2 number, since 2×13309760² = 354299422515200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20477 + ... + 21116.

It is an arithmetic number, because the mean of its divisors is an integer number (1131951).

Almost surely, 2^13309760 is an apocalyptic number.

13309760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13309760 is an abundant number, since it is smaller than the sum of its proper divisors (18384868).

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

13309760 is an equidigital number, since it uses as much as digits as its factorization.

13309760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41610 (or 41600 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 13309760 is about 3648.2543770960. The cubic root of 13309760 is about 236.9863914753.

The spelling of 13309760 in words is "thirteen million, three hundred nine thousand, seven hundred sixty".