13870392 has 64 divisors (see below), whose sum is σ = 36341760. Its totient is φ = 4406400.

The previous prime is 13870391. The next prime is 13870421. The reversal of 13870392 is 29307831.

13870392 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (13870391) 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, 76542 + ... + 76722.

It is an arithmetic number, because the mean of its divisors is an integer number (567840).

Almost surely, 2^13870392 is an apocalyptic number.

13870392 is a gapful number since it is divisible by the number (12) 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 13870392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18170880).

13870392 is an abundant number, since it is smaller than the sum of its proper divisors (22471368).

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

13870392 is a wasteful number, since it uses less digits than its factorization.

13870392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 13870392 is about 3724.2975176535. The cubic root of 13870392 is about 240.2681724587.

The spelling of 13870392 in words is "thirteen million, eight hundred seventy thousand, three hundred ninety-two".