13397040 has 120 divisors (see below), whose sum is σ = 47005920. Its totient is φ = 3412992.

The previous prime is 13397039. The next prime is 13397047. The reversal of 13397040 is 4079331.

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 13396995 and 13397013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13397047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16156 + ... + 16964.

It is an arithmetic number, because the mean of its divisors is an integer number (391716).

Almost surely, 2^13397040 is an apocalyptic number.

13397040 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 13397040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23502960).

13397040 is an abundant number, since it is smaller than the sum of its proper divisors (33608880).

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

13397040 is a wasteful number, since it uses less digits than its factorization.

13397040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 13397040 is about 3660.1967160250. The cubic root of 13397040 is about 237.5032834264.

The spelling of 13397040 in words is "thirteen million, three hundred ninety-seven thousand, forty".