12791145 has 16 divisors (see below), whose sum is σ = 20670912. Its totient is φ = 6753600.

The previous prime is 12791137. The next prime is 12791173. The reversal of 12791145 is 54119721.

12791145 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12791145 - 2³ = 12791137 is a prime.

It is a super-2 number, since 2×12791145² = 327226780822050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2707 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (1291932).

Almost surely, 2^12791145 is an apocalyptic number.

12791145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12791145 is a deficient number, since it is larger than the sum of its proper divisors (7879767).

12791145 is a wasteful number, since it uses less digits than its factorization.

12791145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8552.

The product of its digits is 2520, while the sum is 30.

The square root of 12791145 is about 3576.4710260255. The cubic root of 12791145 is about 233.8674645777.

The spelling of 12791145 in words is "twelve million, seven hundred ninety-one thousand, one hundred forty-five".