13346820 has 36 divisors (see below), whose sum is σ = 40485900. Its totient is φ = 3559104.

The previous prime is 13346789. The next prime is 13346857. The reversal of 13346820 is 2864331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6471936 + 6874884 = 2544^2 + 2622^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×13346820² = 356275208224800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36895 + ... + 37254.

Almost surely, 2^13346820 is an apocalyptic number.

13346820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13346820 is an abundant number, since it is smaller than the sum of its proper divisors (27139080).

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

13346820 is a wasteful number, since it uses less digits than its factorization.

13346820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74164 (or 74159 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 13346820 is about 3653.3299878330. The cubic root of 13346820 is about 237.2061444149.

The spelling of 13346820 in words is "thirteen million, three hundred forty-six thousand, eight hundred twenty".