13139896 has 64 divisors (see below), whose sum is σ = 31207680. Its totient is φ = 5038080.

The previous prime is 13139891. The next prime is 13139909. The reversal of 13139896 is 69893131.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13139891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51000 + ... + 51256.

It is an arithmetic number, because the mean of its divisors is an integer number (487620).

Almost surely, 2^13139896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13139896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15603840).

13139896 is an abundant number, since it is smaller than the sum of its proper divisors (18067784).

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

13139896 is a wasteful number, since it uses less digits than its factorization.

13139896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 360 counting only the distinct ones).

The product of its digits is 34992, while the sum is 40.

The square root of 13139896 is about 3624.8994468813. The cubic root of 13139896 is about 235.9739030800.

The spelling of 13139896 in words is "thirteen million, one hundred thirty-nine thousand, eight hundred ninety-six".