13856810 has 32 divisors (see below), whose sum is σ = 28397952. Its totient is φ = 4818880.

The previous prime is 13856789. The next prime is 13856831. The reversal of 13856810 is 1865831.

It is an interprime number because it is at equal distance from previous prime (13856789) and next prime (13856831).

It is a super-2 number, since 2×13856810² = 384022366752200, which contains 22 as substring.

It is an unprimeable number.

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, 209 + ... + 5268.

It is an arithmetic number, because the mean of its divisors is an integer number (887436).

Almost surely, 2^13856810 is an apocalyptic number.

13856810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13856810 is an abundant number, since it is smaller than the sum of its proper divisors (14541142).

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

13856810 is a wasteful number, since it uses less digits than its factorization.

13856810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 13856810 is about 3722.4736399335. The cubic root of 13856810 is about 240.1897226678.

The spelling of 13856810 in words is "thirteen million, eight hundred fifty-six thousand, eight hundred ten".