13938880 has 56 divisors (see below), whose sum is σ = 33997392. Its totient is φ = 5440512.

The previous prime is 13938857. The next prime is 13938907. The reversal of 13938880 is 8883931.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13254 + ... + 14266.

Almost surely, 2^13938880 is an apocalyptic number.

13938880 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 13938880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16998696).

13938880 is an abundant number, since it is smaller than the sum of its proper divisors (20058512).

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

13938880 is a wasteful number, since it uses less digits than its factorization.

13938880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1063 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 13938880 is about 3733.4809494626. The cubic root of 13938880 is about 240.6629816921.

The spelling of 13938880 in words is "thirteen million, nine hundred thirty-eight thousand, eight hundred eighty".