12980745 has 12 divisors (see below), whose sum is σ = 22500036. Its totient is φ = 6923040.

The previous prime is 12980729. The next prime is 12980749. The reversal of 12980745 is 54708921.

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 11370384 = 1269^2 + 3372^2 .

It is not a de Polignac number, because 12980745 - 2⁴ = 12980729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12980749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144186 + ... + 144275.

It is an arithmetic number, because the mean of its divisors is an integer number (1875003).

Almost surely, 2^12980745 is an apocalyptic number.

12980745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12980745 is a deficient number, since it is larger than the sum of its proper divisors (9519291).

12980745 is a wasteful number, since it uses less digits than its factorization.

12980745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288472 (or 288469 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12980745 is about 3602.8800979217. The cubic root of 12980745 is about 235.0173217955.

The spelling of 12980745 in words is "twelve million, nine hundred eighty thousand, seven hundred forty-five".