13955820 has 24 divisors (see below), whose sum is σ = 39076464. Its totient is φ = 3721536.

The previous prime is 13955813. The next prime is 13955857. The reversal of 13955820 is 2855931.

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, 116239 + ... + 116358.

It is an arithmetic number, because the mean of its divisors is an integer number (1628186).

Almost surely, 2^13955820 is an apocalyptic number.

13955820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13955820 is an abundant number, since it is smaller than the sum of its proper divisors (25120644).

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

13955820 is a wasteful number, since it uses less digits than its factorization.

13955820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232609 (or 232607 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 13955820 is about 3735.7489208993. The cubic root of 13955820 is about 240.7604352534.

The spelling of 13955820 in words is "thirteen million, nine hundred fifty-five thousand, eight hundred twenty".