12277972 has 12 divisors (see below), whose sum is σ = 24556000. Its totient is φ = 5261976.

The previous prime is 12277949. The next prime is 12277973. The reversal of 12277972 is 27977221.

12277972 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12277973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219222 + ... + 219277.

Almost surely, 2^12277972 is an apocalyptic number.

It is an amenable number.

12277972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12277972 is a wasteful number, since it uses less digits than its factorization.

12277972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438510 (or 438508 counting only the distinct ones).

The product of its digits is 24696, while the sum is 37.

The square root of 12277972 is about 3503.9937214556. The cubic root of 12277972 is about 230.6971412545.

The spelling of 12277972 in words is "twelve million, two hundred seventy-seven thousand, nine hundred seventy-two".