13838420 has 12 divisors (see below), whose sum is σ = 29060724. Its totient is φ = 5535360.

The previous prime is 13838413. The next prime is 13838437. The reversal of 13838420 is 2483831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6461764 + 7376656 = 2542^2 + 2716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345941 + ... + 345980.

It is an arithmetic number, because the mean of its divisors is an integer number (2421727).

Almost surely, 2^13838420 is an apocalyptic number.

13838420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13838420 is an abundant number, since it is smaller than the sum of its proper divisors (15222304).

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

13838420 is a wasteful number, since it uses less digits than its factorization.

13838420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691930 (or 691928 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 13838420 is about 3720.0026881711. The cubic root of 13838420 is about 240.0834200753.

The spelling of 13838420 in words is "thirteen million, eight hundred thirty-eight thousand, four hundred twenty".