28106785296 has 40 divisors (see below), whose sum is σ = 80676884960. Its totient is φ = 9368928288.

The previous prime is 28106785271. The next prime is 28106785327. The reversal of 28106785296 is 69258760182.

28106785296 is a `hidden beast` number, since 2 + 8 + 106 + 7 + 8 + 529 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32530570 + ... + 32531433.

It is an arithmetic number, because the mean of its divisors is an integer number (2016922124).

Almost surely, 2^28106785296 is an apocalyptic number.

It is an amenable number.

28106785296 is an abundant number, since it is smaller than the sum of its proper divisors (52570099664).

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

28106785296 is a wasteful number, since it uses less digits than its factorization.

28106785296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65062020 (or 65062008 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 28106785296 in words is "twenty-eight billion, one hundred six million, seven hundred eighty-five thousand, two hundred ninety-six".