28357881882 has 16 divisors (see below), whose sum is σ = 61871742432. Its totient is φ = 8593297520.

The previous prime is 28357881847. The next prime is 28357881907. The reversal of 28357881882 is 28818875382.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214832373 + ... + 214832504.

It is an arithmetic number, because the mean of its divisors is an integer number (3866983902).

Almost surely, 2^28357881882 is an apocalyptic number.

28357881882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28357881882 is an abundant number, since it is smaller than the sum of its proper divisors (33513860550).

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

28357881882 is a wasteful number, since it uses less digits than its factorization.

28357881882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429664893.

The product of its digits is 13762560, while the sum is 60.

The spelling of 28357881882 in words is "twenty-eight billion, three hundred fifty-seven million, eight hundred eighty-one thousand, eight hundred eighty-two".