13809036 has 24 divisors (see below), whose sum is σ = 32281200. Its totient is φ = 4594432.

The previous prime is 13809031. The next prime is 13809053. The reversal of 13809036 is 63090831.

13809036 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13808994 and 13809012.

It is not an unprimeable number, because it can be changed into a prime (13809031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12040 + ... + 13136.

It is an arithmetic number, because the mean of its divisors is an integer number (1345050).

Almost surely, 2^13809036 is an apocalyptic number.

It is an amenable number.

13809036 is an abundant number, since it is smaller than the sum of its proper divisors (18472164).

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

13809036 is a wasteful number, since it uses less digits than its factorization.

13809036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153 (or 2151 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 13809036 is about 3716.0511298958. The cubic root of 13809036 is about 239.9133715128.

Adding to 13809036 its reverse (63090831), we get a palindrome (76899867).

The spelling of 13809036 in words is "thirteen million, eight hundred nine thousand, thirty-six".