28235380712 has 64 divisors (see below), whose sum is σ = 66400266240. Its totient is φ = 10934884800.

The previous prime is 28235380687. The next prime is 28235380721. The reversal of 28235380712 is 21708353282.

It is a self number, because there is not a number n which added to its sum of digits gives 28235380712.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34364 + ... + 240107.

It is an arithmetic number, because the mean of its divisors is an integer number (1037504160).

Almost surely, 2^28235380712 is an apocalyptic number.

28235380712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28235380712 is an abundant number, since it is smaller than the sum of its proper divisors (38164885528).

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

28235380712 is a wasteful number, since it uses less digits than its factorization.

28235380712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274662 (or 274658 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 28235380712 in words is "twenty-eight billion, two hundred thirty-five million, three hundred eighty thousand, seven hundred twelve".