13640460 has 96 divisors (see below), whose sum is σ = 41513472. Its totient is φ = 3333120.

The previous prime is 13640453. The next prime is 13640479. The reversal of 13640460 is 6404631.

It is a self number, because there is not a number n which added to its sum of digits gives 13640460.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43705 + ... + 44015.

It is an arithmetic number, because the mean of its divisors is an integer number (432432).

Almost surely, 2^13640460 is an apocalyptic number.

13640460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13640460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20756736).

13640460 is an abundant number, since it is smaller than the sum of its proper divisors (27873012).

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

13640460 is a wasteful number, since it uses less digits than its factorization.

13640460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 381 counting only the distinct ones).

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

The square root of 13640460 is about 3693.2993379904. The cubic root of 13640460 is about 238.9331115375.

The spelling of 13640460 in words is "thirteen million, six hundred forty thousand, four hundred sixty".