13268820 has 48 divisors (see below), whose sum is σ = 37332288. Its totient is φ = 3521280.

The previous prime is 13268819. The next prime is 13268839. The reversal of 13268820 is 2886231.

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

It is a nialpdrome in base 16.

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, 16467 + ... + 17253.

It is an arithmetic number, because the mean of its divisors is an integer number (777756).

Almost surely, 2^13268820 is an apocalyptic number.

13268820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13268820 is an abundant number, since it is smaller than the sum of its proper divisors (24063468).

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

13268820 is a wasteful number, since it uses less digits than its factorization.

13268820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 13268820 is about 3642.6391531416. The cubic root of 13268820 is about 236.7431567435.

The spelling of 13268820 in words is "thirteen million, two hundred sixty-eight thousand, eight hundred twenty".