28112285730 has 32 divisors (see below), whose sum is σ = 67590656064. Its totient is φ = 7483146176.

The previous prime is 28112285711. The next prime is 28112285743. The reversal of 28112285730 is 3758221182.

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 15 ways as a sum of consecutive naturals, for example, 824472 + ... + 857891.

It is an arithmetic number, because the mean of its divisors is an integer number (2112208002).

Almost surely, 2^28112285730 is an apocalyptic number.

28112285730 is an abundant number, since it is smaller than the sum of its proper divisors (39478370334).

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

28112285730 is a wasteful number, since it uses less digits than its factorization.

28112285730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682930.

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 28112285730 in words is "twenty-eight billion, one hundred twelve million, two hundred eighty-five thousand, seven hundred thirty".