12272724 has 18 divisors (see below), whose sum is σ = 31022810. Its totient is φ = 4090896.

The previous prime is 12272719. The next prime is 12272737. The reversal of 12272724 is 42727221.

It can be written as a sum of positive squares in only one way, i.e., 7128900 + 5143824 = 2670^2 + 2268^2 .

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

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 170419 + ... + 170490.

Almost surely, 2^12272724 is an apocalyptic number.

It is an amenable number.

12272724 is an abundant number, since it is smaller than the sum of its proper divisors (18750086).

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

12272724 is a wasteful number, since it uses less digits than its factorization.

12272724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340919 (or 340914 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 12272724 is about 3503.2447816275. The cubic root of 12272724 is about 230.6642674451.

Adding to 12272724 its reverse (42727221), we get a palindrome (54999945).

It can be divided in two parts, 12272 and 724, that added together give a square (12996 = 114²).

The spelling of 12272724 in words is "twelve million, two hundred seventy-two thousand, seven hundred twenty-four".