12757572 has 18 divisors (see below), whose sum is σ = 32248398. Its totient is φ = 4252512.

The previous prime is 12757543. The next prime is 12757583. The reversal of 12757572 is 27575721.

12757572 is a `hidden beast` number, since 12 + 7 + 575 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10342656 + 2414916 = 3216^2 + 1554^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 354377 = 12757572 / (1 + 2 + 7 + 5 + 7 + 5 + 7 + 2).

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177153 + ... + 177224.

Almost surely, 2^12757572 is an apocalyptic number.

12757572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12757572 is an abundant number, since it is smaller than the sum of its proper divisors (19490826).

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

12757572 is a wasteful number, since it uses less digits than its factorization.

12757572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354387 (or 354382 counting only the distinct ones).

The product of its digits is 34300, while the sum is 36.

The square root of 12757572 is about 3571.7743489756. The cubic root of 12757572 is about 233.6626741587.

The spelling of 12757572 in words is "twelve million, seven hundred fifty-seven thousand, five hundred seventy-two".