13459640 has 16 divisors (see below), whose sum is σ = 30284280. Its totient is φ = 5383840.

The previous prime is 13459639. The next prime is 13459643. The reversal of 13459640 is 4695431.

It is a junction number, because it is equal to n+sod(n) for n = 13459597 and 13459606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13459643) 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, 168206 + ... + 168285.

Almost surely, 2^13459640 is an apocalyptic number.

13459640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13459640 is an abundant number, since it is smaller than the sum of its proper divisors (16824640).

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

13459640 is a wasteful number, since it uses less digits than its factorization.

13459640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336502 (or 336498 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 13459640 is about 3668.7382027068. The cubic root of 13459640 is about 237.8726338739.

The spelling of 13459640 in words is "thirteen million, four hundred fifty-nine thousand, six hundred forty".