12144772 has 6 divisors (see below), whose sum is σ = 21253358. Its totient is φ = 6072384.

The previous prime is 12144767. The next prime is 12144787. The reversal of 12144772 is 27744121.

It can be written as a sum of positive squares in only one way, i.e., 9096256 + 3048516 = 3016^2 + 1746^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12144772.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1518093 + ... + 1518100.

Almost surely, 2^12144772 is an apocalyptic number.

It is an amenable number.

12144772 is a deficient number, since it is larger than the sum of its proper divisors (9108586).

12144772 is a wasteful number, since it uses less digits than its factorization.

12144772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036197 (or 3036195 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 12144772 is about 3484.9350065676. The cubic root of 12144772 is about 229.8598516072.

Adding to 12144772 its reverse (27744121), we get a palindrome (39888893).

The spelling of 12144772 in words is "twelve million, one hundred forty-four thousand, seven hundred seventy-two".