12775572 has 18 divisors (see below), whose sum is σ = 32293898. Its totient is φ = 4258512.

The previous prime is 12775549. The next prime is 12775577. The reversal of 12775572 is 27557721.

12775572 is a `hidden beast` number, since 12 + 7 + 75 + 572 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11048976 + 1726596 = 3324^2 + 1314^2 .

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: 354877 = 12775572 / (1 + 2 + 7 + 7 + 5 + 5 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12775577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177403 + ... + 177474.

Almost surely, 2^12775572 is an apocalyptic number.

12775572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12775572 is an abundant number, since it is smaller than the sum of its proper divisors (19518326).

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

12775572 is a wasteful number, since it uses less digits than its factorization.

12775572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354887 (or 354882 counting only the distinct ones).

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

The square root of 12775572 is about 3574.2932168472. The cubic root of 12775572 is about 233.7725161568.

The spelling of 12775572 in words is "twelve million, seven hundred seventy-five thousand, five hundred seventy-two".