13379820 has 48 divisors (see below), whose sum is σ = 37709280. Its totient is φ = 3544576.

The previous prime is 13379809. The next prime is 13379827. The reversal of 13379820 is 2897331.

It is not an unprimeable number, because it can be changed into a prime (13379827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9736 + ... + 11024.

It is an arithmetic number, because the mean of its divisors is an integer number (785610).

Almost surely, 2^13379820 is an apocalyptic number.

13379820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13379820 is an abundant number, since it is smaller than the sum of its proper divisors (24329460).

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

13379820 is a wasteful number, since it uses less digits than its factorization.

13379820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 13379820 is about 3657.8436270568. The cubic root of 13379820 is about 237.4014808372.

The spelling of 13379820 in words is "thirteen million, three hundred seventy-nine thousand, eight hundred twenty".