12728257074 has 48 divisors (see below), whose sum is σ = 29850132312. Its totient is φ = 3896492544.

The previous prime is 12728257037. The next prime is 12728257079. The reversal of 12728257074 is 47075282721.

12728257074 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 8 + 2 + 570 + 74 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12375005049 + 353252025 = 111243^2 + 18795^2 .

It is not an unprimeable number, because it can be changed into a prime (12728257079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91959 + ... + 184154.

Almost surely, 2^12728257074 is an apocalyptic number.

12728257074 is an abundant number, since it is smaller than the sum of its proper divisors (17121875238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12728257074 is a wasteful number, since it uses less digits than its factorization.

12728257074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276331 (or 276328 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The spelling of 12728257074 in words is "twelve billion, seven hundred twenty-eight million, two hundred fifty-seven thousand, seventy-four".