13844420 has 12 divisors (see below), whose sum is σ = 29073324. Its totient is φ = 5537760.

The previous prime is 13844419. The next prime is 13844423. The reversal of 13844420 is 2444831.

It can be written as a sum of positive squares in 2 ways, for example, as 6959044 + 6885376 = 2638^2 + 2624^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13844420.

It is not an unprimeable number, because it can be changed into a prime (13844423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346091 + ... + 346130.

It is an arithmetic number, because the mean of its divisors is an integer number (2422777).

Almost surely, 2^13844420 is an apocalyptic number.

13844420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13844420 is an abundant number, since it is smaller than the sum of its proper divisors (15228904).

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

13844420 is a wasteful number, since it uses less digits than its factorization.

13844420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692230 (or 692228 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 13844420 is about 3720.8090518058. The cubic root of 13844420 is about 240.1181131588.

The spelling of 13844420 in words is "thirteen million, eight hundred forty-four thousand, four hundred twenty".