13646140 has 12 divisors (see below), whose sum is σ = 28656936. Its totient is φ = 5458448.

The previous prime is 13646131. The next prime is 13646147. The reversal of 13646140 is 4164631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13646147) 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 3 ways as a sum of consecutive naturals, for example, 341134 + ... + 341173.

It is an arithmetic number, because the mean of its divisors is an integer number (2388078).

Almost surely, 2^13646140 is an apocalyptic number.

13646140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13646140 is an abundant number, since it is smaller than the sum of its proper divisors (15010796).

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

13646140 is a wasteful number, since it uses less digits than its factorization.

13646140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682316 (or 682314 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 13646140 is about 3694.0682181032. The cubic root of 13646140 is about 238.9662715077.

The spelling of 13646140 in words is "thirteen million, six hundred forty-six thousand, one hundred forty".