12720946 has 16 divisors (see below), whose sum is σ = 21884544. Its totient is φ = 5432544.

The previous prime is 12720941. The next prime is 12720949. The reversal of 12720946 is 64902721.

It is not an unprimeable number, because it can be changed into a prime (12720941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2931 + ... + 5833.

It is an arithmetic number, because the mean of its divisors is an integer number (1367784).

Almost surely, 2^12720946 is an apocalyptic number.

12720946 is a deficient number, since it is larger than the sum of its proper divisors (9163598).

12720946 is a wasteful number, since it uses less digits than its factorization.

12720946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 12720946 is about 3566.6435201741. The cubic root of 12720946 is about 233.4388506887.

The spelling of 12720946 in words is "twelve million, seven hundred twenty thousand, nine hundred forty-six".