12798305 has 32 divisors (see below), whose sum is σ = 17888640. Its totient is φ = 8709120.

The previous prime is 12798301. The next prime is 12798311. The reversal of 12798305 is 50389721.

It is not a de Polignac number, because 12798305 - 2² = 12798301 is a prime.

It is a super-2 number, since 2×12798305² = 327593221746050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12798301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52985 + ... + 53225.

It is an arithmetic number, because the mean of its divisors is an integer number (559020).

Almost surely, 2^12798305 is an apocalyptic number.

It is an amenable number.

12798305 is a deficient number, since it is larger than the sum of its proper divisors (5090335).

12798305 is a wasteful number, since it uses less digits than its factorization.

12798305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 12798305 is about 3577.4718727056. The cubic root of 12798305 is about 233.9110931636.

The spelling of 12798305 in words is "twelve million, seven hundred ninety-eight thousand, three hundred five".