12566720 has 56 divisors (see below), whose sum is σ = 30230064. Its totient is φ = 4975616.

The previous prime is 12566693. The next prime is 12566737. The reversal of 12566720 is 2766521.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 55247 + ... + 55473.

Almost surely, 2^12566720 is an apocalyptic number.

12566720 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 12566720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15115032).

12566720 is an abundant number, since it is smaller than the sum of its proper divisors (17663344).

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

12566720 is a wasteful number, since it uses less digits than its factorization.

12566720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 12566720 is about 3544.9569814033. The cubic root of 12566720 is about 232.4916249344.

The spelling of 12566720 in words is "twelve million, five hundred sixty-six thousand, seven hundred twenty".