12280572 has 60 divisors (see below), whose sum is σ = 33236280. Its totient is φ = 3949344.

The previous prime is 12280561. The next prime is 12280573. The reversal of 12280572 is 27508221.

12280572 is a `hidden beast` number, since 12 + 2 + 80 + 572 = 666.

It is a super-4 number, since 4×12280572⁴ (a number of 29 digits) contains 4444 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280573) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8743 + ... + 10049.

It is an arithmetic number, because the mean of its divisors is an integer number (553938).

Almost surely, 2^12280572 is an apocalyptic number.

12280572 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 12280572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16618140).

12280572 is an abundant number, since it is smaller than the sum of its proper divisors (20955708).

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

12280572 is a wasteful number, since it uses less digits than its factorization.

12280572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352 (or 1341 counting only the distinct ones).

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

The square root of 12280572 is about 3504.3647070475. The cubic root of 12280572 is about 230.7134243517.

Adding to 12280572 its reverse (27508221), we get a palindrome (39788793).

The spelling of 12280572 in words is "twelve million, two hundred eighty thousand, five hundred seventy-two".