13843920 has 80 divisors (see below), whose sum is σ = 44104320. Its totient is φ = 3589632.

The previous prime is 13843919. The next prime is 13843943. The reversal of 13843920 is 2934831.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8101 + ... + 9659.

It is an arithmetic number, because the mean of its divisors is an integer number (551304).

Almost surely, 2^13843920 is an apocalyptic number.

13843920 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 13843920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22052160).

13843920 is an abundant number, since it is smaller than the sum of its proper divisors (30260400).

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

13843920 is a wasteful number, since it uses less digits than its factorization.

13843920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 13843920 is about 3720.7418615110. The cubic root of 13843920 is about 240.1152224514.

The spelling of 13843920 in words is "thirteen million, eight hundred forty-three thousand, nine hundred twenty".