13240818 has 24 divisors (see below), whose sum is σ = 29357328. Its totient is φ = 4310712.

The previous prime is 13240817. The next prime is 13240837. The reversal of 13240818 is 81804231.

It is a super-2 number, since 2×13240818² = 350638522618248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13240791 and 13240800.

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, 7780 + ... + 9327.

It is an arithmetic number, because the mean of its divisors is an integer number (1223222).

Almost surely, 2^13240818 is an apocalyptic number.

13240818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13240818 is an abundant number, since it is smaller than the sum of its proper divisors (16116510).

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

13240818 is a wasteful number, since it uses less digits than its factorization.

13240818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17158 (or 17155 counting only the distinct ones).

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

The square root of 13240818 is about 3638.7934813616. The cubic root of 13240818 is about 236.5765016140.

The spelling of 13240818 in words is "thirteen million, two hundred forty thousand, eight hundred eighteen".