13839620 has 24 divisors (see below), whose sum is σ = 29683584. Its totient is φ = 5417696.

The previous prime is 13839613. The next prime is 13839643. The reversal of 13839620 is 2693831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6422 + ... + 8301.

It is an arithmetic number, because the mean of its divisors is an integer number (1236816).

Almost surely, 2^13839620 is an apocalyptic number.

13839620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13839620 is an abundant number, since it is smaller than the sum of its proper divisors (15843964).

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

13839620 is a wasteful number, since it uses less digits than its factorization.

13839620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14779 (or 14777 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 13839620 is about 3720.1639748807. The cubic root of 13839620 is about 240.0903594941.

The spelling of 13839620 in words is "thirteen million, eight hundred thirty-nine thousand, six hundred twenty".