12773845 has 16 divisors (see below), whose sum is σ = 17641728. Its totient is φ = 8697600.

The previous prime is 12773807. The next prime is 12773857. The reversal of 12773845 is 54837721.

It is a de Polignac number, because none of the positive numbers 2^k-12773845 is a prime.

It is a super-2 number, since 2×12773845² = 326342232168050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4077 + ... + 6493.

It is an arithmetic number, because the mean of its divisors is an integer number (1102608).

Almost surely, 2^12773845 is an apocalyptic number.

It is an amenable number.

12773845 is a deficient number, since it is larger than the sum of its proper divisors (4867883).

12773845 is a wasteful number, since it uses less digits than its factorization.

12773845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580.

The product of its digits is 47040, while the sum is 37.

The square root of 12773845 is about 3574.0516224587. The cubic root of 12773845 is about 233.7619819037.

The spelling of 12773845 in words is "twelve million, seven hundred seventy-three thousand, eight hundred forty-five".