13420816 has 20 divisors (see below), whose sum is σ = 26608912. Its totient is φ = 6554016.

The previous prime is 13420807. The next prime is 13420873. The reversal of 13420816 is 61802431.

It is a nialpdrome in base 16.

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, 9066 + ... + 10441.

Almost surely, 2^13420816 is an apocalyptic number.

13420816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13420816 is a deficient number, since it is larger than the sum of its proper divisors (13188096).

13420816 is a wasteful number, since it uses less digits than its factorization.

13420816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19558 (or 19552 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 13420816 is about 3663.4431891323. The cubic root of 13420816 is about 237.6437010315.

The spelling of 13420816 in words is "thirteen million, four hundred twenty thousand, eight hundred sixteen".