13240812 has 36 divisors (see below), whose sum is σ = 33459720. Its totient is φ = 4073472.

The previous prime is 13240771. The next prime is 13240817. The reversal of 13240812 is 21804231.

It is not an unprimeable number, because it can be changed into a prime (13240817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1237 + ... + 5292.

Almost surely, 2^13240812 is an apocalyptic number.

13240812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13240812 is an abundant number, since it is smaller than the sum of its proper divisors (20218908).

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

13240812 is a wasteful number, since it uses less digits than its factorization.

13240812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562 (or 6547 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 13240812 is about 3638.7926569125. The cubic root of 13240812 is about 236.5764658796.

The spelling of 13240812 in words is "thirteen million, two hundred forty thousand, eight hundred twelve".