13608740 has 24 divisors (see below), whose sum is σ = 28865592. Its totient is φ = 5388800.

The previous prime is 13608739. The next prime is 13608779. The reversal of 13608740 is 4780631.

It can be written as a sum of positive squares in 4 ways, for example, as 4596736 + 9012004 = 2144^2 + 3002^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1349 + ... + 5388.

It is an arithmetic number, because the mean of its divisors is an integer number (1202733).

Almost surely, 2^13608740 is an apocalyptic number.

13608740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13608740 is an abundant number, since it is smaller than the sum of its proper divisors (15256852).

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

13608740 is a wasteful number, since it uses less digits than its factorization.

13608740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847 (or 6845 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 13608740 is about 3689.0025752227. The cubic root of 13608740 is about 238.7477600002.

The spelling of 13608740 in words is "thirteen million, six hundred eight thousand, seven hundred forty".