13425840 has 120 divisors (see below), whose sum is σ = 46715760. Its totient is φ = 3451392.

The previous prime is 13425833. The next prime is 13425851. The reversal of 13425840 is 4852431.

13425840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20559 + ... + 21201.

It is an arithmetic number, because the mean of its divisors is an integer number (389298).

Almost surely, 2^13425840 is an apocalyptic number.

13425840 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 13425840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23357880).

13425840 is an abundant number, since it is smaller than the sum of its proper divisors (33289920).

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

13425840 is a wasteful number, since it uses less digits than its factorization.

13425840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 13425840 is about 3664.1288186962. The cubic root of 13425840 is about 237.6733508184.

The spelling of 13425840 in words is "thirteen million, four hundred twenty-five thousand, eight hundred forty".