28112613028 has 12 divisors (see below), whose sum is σ = 51786392560. Its totient is φ = 13316500872.

The previous prime is 28112612981. The next prime is 28112613031. The reversal of 28112613028 is 82031621182.

It is a happy number.

It is a super-2 number, since 2×28112613028² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28112612984 and 28112613002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184951326 + ... + 184951477.

Almost surely, 2^28112613028 is an apocalyptic number.

It is an amenable number.

28112613028 is a deficient number, since it is larger than the sum of its proper divisors (23673779532).

28112613028 is a wasteful number, since it uses less digits than its factorization.

28112613028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369902826 (or 369902824 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 28112613028 in words is "twenty-eight billion, one hundred twelve million, six hundred thirteen thousand, twenty-eight".