13940520 has 128 divisors (see below), whose sum is σ = 46656000. Its totient is φ = 3303680.

The previous prime is 13940519. The next prime is 13940539. The reversal of 13940520 is 2504931.

13940520 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77791 + ... + 77969.

It is an arithmetic number, because the mean of its divisors is an integer number (364500).

Almost surely, 2^13940520 is an apocalyptic number.

13940520 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 13940520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23328000).

13940520 is an abundant number, since it is smaller than the sum of its proper divisors (32715480).

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

13940520 is a wasteful number, since it uses less digits than its factorization.

13940520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13940520 is about 3733.7005771754. The cubic root of 13940520 is about 240.6724198442.

The spelling of 13940520 in words is "thirteen million, nine hundred forty thousand, five hundred twenty".