28302332772 has 36 divisors (see below), whose sum is σ = 76820619120. Its totient is φ = 8086380624.

The previous prime is 28302332767. The next prime is 28302332803. The reversal of 28302332772 is 27723320382.

It is a self number, because there is not a number n which added to its sum of digits gives 28302332772.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24066022 + ... + 24067197.

Almost surely, 2^28302332772 is an apocalyptic number.

It is an amenable number.

28302332772 is an abundant number, since it is smaller than the sum of its proper divisors (48518286348).

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

28302332772 is a wasteful number, since it uses less digits than its factorization.

28302332772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48133240 (or 48133231 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 39.

The spelling of 28302332772 in words is "twenty-eight billion, three hundred two million, three hundred thirty-two thousand, seven hundred seventy-two".