12644730 has 48 divisors (see below), whose sum is σ = 37574784. Its totient is φ = 2890080.

The previous prime is 12644707. The next prime is 12644741. The reversal of 12644730 is 3744621.

12644730 is a `hidden beast` number, since 12 + 644 + 7 + 3 + 0 = 666.

12644730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12644694 and 12644703.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9406 + ... + 10665.

It is an arithmetic number, because the mean of its divisors is an integer number (782808).

Almost surely, 2^12644730 is an apocalyptic number.

12644730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12644730 is an abundant number, since it is smaller than the sum of its proper divisors (24930054).

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

12644730 is a wasteful number, since it uses less digits than its factorization.

12644730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20091 (or 20088 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 12644730 is about 3555.9429129276. The cubic root of 12644730 is about 232.9717096808.

The spelling of 12644730 in words is "twelve million, six hundred forty-four thousand, seven hundred thirty".