13646040 has 32 divisors (see below), whose sum is σ = 40938480. Its totient is φ = 3638912.

The previous prime is 13646033. The next prime is 13646041. The reversal of 13646040 is 4064631.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 13646040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13646041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56739 + ... + 56978.

Almost surely, 2^13646040 is an apocalyptic number.

13646040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13646040 is an abundant number, since it is smaller than the sum of its proper divisors (27292440).

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

13646040 is a wasteful number, since it uses less digits than its factorization.

13646040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113731 (or 113727 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 13646040 is about 3694.0546828654. The cubic root of 13646040 is about 238.9656877850.

The spelling of 13646040 in words is "thirteen million, six hundred forty-six thousand, forty".