13897836 has 18 divisors (see below), whose sum is σ = 35130732. Its totient is φ = 4632600.

The previous prime is 13897831. The next prime is 13897841. The reversal of 13897836 is 63879831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13897831) and next prime (13897841).

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 13897791 and 13897800.

It is not an unprimeable number, because it can be changed into a prime (13897831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 192990 + ... + 193061.

Almost surely, 2^13897836 is an apocalyptic number.

It is an amenable number.

13897836 is an abundant number, since it is smaller than the sum of its proper divisors (21232896).

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

13897836 is a wasteful number, since it uses less digits than its factorization.

13897836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386061 (or 386056 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 13897836 is about 3727.9801501617. The cubic root of 13897836 is about 240.4265331736.

The spelling of 13897836 in words is "thirteen million, eight hundred ninety-seven thousand, eight hundred thirty-six".