12289572 has 72 divisors (see below), whose sum is σ = 33729696. Its totient is φ = 3757824.

The previous prime is 12289559. The next prime is 12289573. The reversal of 12289572 is 27598221.

12289572 is a `hidden beast` number, since 1 + 2 + 2 + 89 + 572 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12289573) 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 23 ways as a sum of consecutive naturals, for example, 26083 + ... + 26549.

It is an arithmetic number, because the mean of its divisors is an integer number (468468).

Almost surely, 2^12289572 is an apocalyptic number.

12289572 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 12289572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16864848).

12289572 is an abundant number, since it is smaller than the sum of its proper divisors (21440124).

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

12289572 is a wasteful number, since it uses less digits than its factorization.

12289572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 532 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 12289572 is about 3505.6485847843. The cubic root of 12289572 is about 230.7697711782.

The spelling of 12289572 in words is "twelve million, two hundred eighty-nine thousand, five hundred seventy-two".