12820572 has 24 divisors (see below), whose sum is σ = 33238800. Its totient is φ = 4273488.

The previous prime is 12820559. The next prime is 12820583. The reversal of 12820572 is 27502821.

12820572 is a `hidden beast` number, since 12 + 82 + 0 + 572 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59247 + ... + 59462.

It is an arithmetic number, because the mean of its divisors is an integer number (1384950).

Almost surely, 2^12820572 is an apocalyptic number.

12820572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12820572 is an abundant number, since it is smaller than the sum of its proper divisors (20418228).

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

12820572 is a wasteful number, since it uses less digits than its factorization.

12820572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118722 (or 118714 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12820572 is about 3580.5826341533. The cubic root of 12820572 is about 234.0466705070.

The spelling of 12820572 in words is "twelve million, eight hundred twenty thousand, five hundred seventy-two".