13339440 has 120 divisors (see below), whose sum is σ = 45497088. Its totient is φ = 3502080.

The previous prime is 13339429. The next prime is 13339531. The reversal of 13339440 is 4493331.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69745 + ... + 69935.

Almost surely, 2^13339440 is an apocalyptic number.

13339440 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 13339440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22748544).

13339440 is an abundant number, since it is smaller than the sum of its proper divisors (32157648).

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

13339440 is a wasteful number, since it uses less digits than its factorization.

13339440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 13339440 is about 3652.3198107504. The cubic root of 13339440 is about 237.1624160436.

The spelling of 13339440 in words is "thirteen million, three hundred thirty-nine thousand, four hundred forty".