13870436 has 12 divisors (see below), whose sum is σ = 25701228. Its totient is φ = 6527232.

The previous prime is 13870427. The next prime is 13870457. The reversal of 13870436 is 63407831.

13870436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12673600 + 1196836 = 3560^2 + 1094^2 .

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, 101921 + ... + 102056.

It is an arithmetic number, because the mean of its divisors is an integer number (2141769).

Almost surely, 2^13870436 is an apocalyptic number.

It is an amenable number.

13870436 is a deficient number, since it is larger than the sum of its proper divisors (11830792).

13870436 is a wasteful number, since it uses less digits than its factorization.

13870436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203998 (or 203996 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 13870436 is about 3724.3034248031. The cubic root of 13870436 is about 240.2684265199.

The spelling of 13870436 in words is "thirteen million, eight hundred seventy thousand, four hundred thirty-six".