12646572 has 48 divisors (see below), whose sum is σ = 31933440. Its totient is φ = 3880192.

The previous prime is 12646567. The next prime is 12646577. The reversal of 12646572 is 27564621.

It is an interprime number because it is at equal distance from previous prime (12646567) and next prime (12646577).

It is not an unprimeable number, because it can be changed into a prime (12646577) 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 15 ways as a sum of consecutive naturals, for example, 8929 + ... + 10247.

It is an arithmetic number, because the mean of its divisors is an integer number (665280).

Almost surely, 2^12646572 is an apocalyptic number.

12646572 is a gapful number since it is divisible by the number (12) 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 12646572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15966720).

12646572 is an abundant number, since it is smaller than the sum of its proper divisors (19286868).

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

12646572 is a wasteful number, since it uses less digits than its factorization.

12646572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390 (or 1388 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 12646572 is about 3556.2019065289. The cubic root of 12646572 is about 232.9830217202.

The spelling of 12646572 in words is "twelve million, six hundred forty-six thousand, five hundred seventy-two".