12556572 has 48 divisors (see below), whose sum is σ = 33906432. Its totient is φ = 3542400.

The previous prime is 12556571. The next prime is 12556573. The reversal of 12556572 is 27565521.

It is an interprime number because it is at equal distance from previous prime (12556571) and next prime (12556573).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12556571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6072 + ... + 7872.

It is an arithmetic number, because the mean of its divisors is an integer number (706384).

Almost surely, 2^12556572 is an apocalyptic number.

12556572 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 12556572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16953216).

12556572 is an abundant number, since it is smaller than the sum of its proper divisors (21349860).

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

12556572 is a wasteful number, since it uses less digits than its factorization.

12556572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1896 counting only the distinct ones).

The product of its digits is 21000, while the sum is 33.

The square root of 12556572 is about 3543.5253632506. The cubic root of 12556572 is about 232.4290267817.

The spelling of 12556572 in words is "twelve million, five hundred fifty-six thousand, five hundred seventy-two".