13840812 has 36 divisors (see below), whose sum is σ = 35935536. Its totient is φ = 4488480.

The previous prime is 13840807. The next prime is 13840829. The reversal of 13840812 is 21804831.

13840812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3864 + ... + 6527.

Almost surely, 2^13840812 is an apocalyptic number.

13840812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13840812 is an abundant number, since it is smaller than the sum of its proper divisors (22094724).

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

13840812 is a wasteful number, since it uses less digits than its factorization.

13840812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10438 (or 10433 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 13840812 is about 3720.3241794231. The cubic root of 13840812 is about 240.0972522530.

The spelling of 13840812 in words is "thirteen million, eight hundred forty thousand, eight hundred twelve".