13709880 has 48 divisors (see below), whose sum is σ = 44558280. Its totient is φ = 3655872.

The previous prime is 13709873. The next prime is 13709903. The reversal of 13709880 is 8890731.

It is a super-2 number, since 2×13709880² = 375921619228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18682 + ... + 19401.

Almost surely, 2^13709880 is an apocalyptic number.

13709880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13709880 is an abundant number, since it is smaller than the sum of its proper divisors (30848400).

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

13709880 is a wasteful number, since it uses less digits than its factorization.

13709880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38100 (or 38093 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 13709880 is about 3702.6855118954. The cubic root of 13709880 is about 239.3377576603.

The spelling of 13709880 in words is "thirteen million, seven hundred nine thousand, eight hundred eighty".