28386807332 has 48 divisors (see below), whose sum is σ = 56715612912. Its totient is φ = 12315586560.

The previous prime is 28386807311. The next prime is 28386807347. The reversal of 28386807332 is 23370868382.

It can be written as a sum of positive squares in 8 ways, for example, as 3802448896 + 24584358436 = 61664^2 + 156794^2 .

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 15 ways as a sum of consecutive naturals, for example, 706208 + ... + 745320.

It is an arithmetic number, because the mean of its divisors is an integer number (1181575269).

Almost surely, 2^28386807332 is an apocalyptic number.

It is an amenable number.

28386807332 is a deficient number, since it is larger than the sum of its proper divisors (28328805580).

28386807332 is a wasteful number, since it uses less digits than its factorization.

28386807332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39968 (or 39966 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 28386807332 in words is "twenty-eight billion, three hundred eighty-six million, eight hundred seven thousand, three hundred thirty-two".