13240660 has 24 divisors (see below), whose sum is σ = 28263816. Its totient is φ = 5208960.

The previous prime is 13240657. The next prime is 13240673. The reversal of 13240660 is 6604231.

It can be written as a sum of positive squares in 4 ways, for example, as 20164 + 13220496 = 142^2 + 3636^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4207 + ... + 6646.

It is an arithmetic number, because the mean of its divisors is an integer number (1177659).

Almost surely, 2^13240660 is an apocalyptic number.

13240660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13240660 is an abundant number, since it is smaller than the sum of its proper divisors (15023156).

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

13240660 is a wasteful number, since it uses less digits than its factorization.

13240660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10923 (or 10921 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 13240660 is about 3638.7717708040. The cubic root of 13240660 is about 236.5755606038.

Adding to 13240660 its reverse (6604231), we get a palindrome (19844891).

The spelling of 13240660 in words is "thirteen million, two hundred forty thousand, six hundred sixty".