12647040 has 128 divisors (see below), whose sum is σ = 46120320. Its totient is φ = 2887680.

The previous prime is 12647029. The next prime is 12647051. The reversal of 12647040 is 4074621.

It is an interprime number because it is at equal distance from previous prime (12647029) and next prime (12647051).

It is a tau number, because it is divible by the number of its divisors (128).

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 12647040.

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, 12970 + ... + 13910.

It is an arithmetic number, because the mean of its divisors is an integer number (360315).

Almost surely, 2^12647040 is an apocalyptic number.

12647040 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 12647040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23060160).

12647040 is an abundant number, since it is smaller than the sum of its proper divisors (33473280).

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

12647040 is an equidigital number, since it uses as much as digits as its factorization.

12647040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 12647040 is about 3556.2677064586. The cubic root of 12647040 is about 232.9858956139.

The spelling of 12647040 in words is "twelve million, six hundred forty-seven thousand, forty".