13383820 has 48 divisors (see below), whose sum is σ = 29090880. Its totient is φ = 5170176.

The previous prime is 13383817. The next prime is 13383823. The reversal of 13383820 is 2838331.

It is an interprime number because it is at equal distance from previous prime (13383817) and next prime (13383823).

It is not an unprimeable number, because it can be changed into a prime (13383823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129889 + ... + 129991.

It is an arithmetic number, because the mean of its divisors is an integer number (606060).

Almost surely, 2^13383820 is an apocalyptic number.

13383820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13383820 is an abundant number, since it is smaller than the sum of its proper divisors (15707060).

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

13383820 is a wasteful number, since it uses less digits than its factorization.

13383820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 13383820 is about 3658.3903564273. The cubic root of 13383820 is about 237.4251361456.

The spelling of 13383820 in words is "thirteen million, three hundred eighty-three thousand, eight hundred twenty".