12858907828 has 18 divisors (see below), whose sum is σ = 24367251174. Its totient is φ = 5934880224.

The previous prime is 12858907823. The next prime is 12858907829. The reversal of 12858907828 is 82870985821.

It can be written as a sum of positive squares in 3 ways, for example, as 3429904 + 12855477924 = 1852^2 + 113382^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12858907823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9510351 + ... + 9511702.

Almost surely, 2^12858907828 is an apocalyptic number.

It is an amenable number.

12858907828 is a deficient number, since it is larger than the sum of its proper divisors (11508343346).

12858907828 is a wasteful number, since it uses less digits than its factorization.

12858907828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19022083 (or 19022068 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 58.

The spelling of 12858907828 in words is "twelve billion, eight hundred fifty-eight million, nine hundred seven thousand, eight hundred twenty-eight".