13589640 has 64 divisors (see below), whose sum is σ = 45302400. Its totient is φ = 3623616.

The previous prime is 13589629. The next prime is 13589663. The reversal of 13589640 is 4698531.

13589640 is a `hidden beast` number, since 1 + 3 + 5 + 8 + 9 + 640 = 666.

13589640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13589595 and 13589604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5212 + ... + 7371.

It is an arithmetic number, because the mean of its divisors is an integer number (707850).

Almost surely, 2^13589640 is an apocalyptic number.

13589640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13589640 is an abundant number, since it is smaller than the sum of its proper divisors (31712760).

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

13589640 is a wasteful number, since it uses less digits than its factorization.

13589640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12603 (or 12593 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 13589640 is about 3686.4128906025. The cubic root of 13589640 is about 238.6360127639.

The spelling of 13589640 in words is "thirteen million, five hundred eighty-nine thousand, six hundred forty".