12990745 has 16 divisors (see below), whose sum is σ = 16474752. Its totient is φ = 9813760.

The previous prime is 12990701. The next prime is 12990749. The reversal of 12990745 is 54709921.

It is not a de Polignac number, because 12990745 - 2⁹ = 12990233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12990749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8865 + ... + 10225.

It is an arithmetic number, because the mean of its divisors is an integer number (1029672).

Almost surely, 2^12990745 is an apocalyptic number.

It is an amenable number.

12990745 is a deficient number, since it is larger than the sum of its proper divisors (3484007).

12990745 is a wasteful number, since it uses less digits than its factorization.

12990745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 12990745 is about 3604.2676093764. The cubic root of 12990745 is about 235.0776565445.

The spelling of 12990745 in words is "twelve million, nine hundred ninety thousand, seven hundred forty-five".