13818856 has 16 divisors (see below), whose sum is σ = 26086500. Its totient is φ = 6862464.

The previous prime is 13818853. The next prime is 13818863. The reversal of 13818856 is 65881831.

It can be written as a sum of positive squares in 2 ways, for example, as 13764100 + 54756 = 3710^2 + 234^2 .

It is a super-2 number, since 2×13818856² = 381921562297472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13818853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4605 + ... + 6988.

Almost surely, 2^13818856 is an apocalyptic number.

It is an amenable number.

13818856 is a deficient number, since it is larger than the sum of its proper divisors (12267644).

13818856 is a wasteful number, since it uses less digits than its factorization.

13818856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11748 (or 11744 counting only the distinct ones).

The product of its digits is 46080, while the sum is 40.

The square root of 13818856 is about 3717.3721901365. The cubic root of 13818856 is about 239.9702277884.

The spelling of 13818856 in words is "thirteen million, eight hundred eighteen thousand, eight hundred fifty-six".