12961772 has 12 divisors (see below), whose sum is σ = 22809696. Its totient is φ = 6444720.

The previous prime is 12961757. The next prime is 12961777. The reversal of 12961772 is 27716921.

It is not an unprimeable number, because it can be changed into a prime (12961777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8228 + ... + 9675.

It is an arithmetic number, because the mean of its divisors is an integer number (1900808).

Almost surely, 2^12961772 is an apocalyptic number.

It is an amenable number.

12961772 is a deficient number, since it is larger than the sum of its proper divisors (9847924).

12961772 is a wasteful number, since it uses less digits than its factorization.

12961772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18088 (or 18086 counting only the distinct ones).

The product of its digits is 10584, while the sum is 35.

The square root of 12961772 is about 3600.2461026991. The cubic root of 12961772 is about 234.9027634536.

The spelling of 12961772 in words is "twelve million, nine hundred sixty-one thousand, seven hundred seventy-two".