28085464212 has 48 divisors (see below), whose sum is σ = 70685822592. Its totient is φ = 8627955840.

The previous prime is 28085464153. The next prime is 28085464273. The reversal of 28085464212 is 21246458082.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 44223 + ... + 241094.

It is an arithmetic number, because the mean of its divisors is an integer number (1472621304).

Almost surely, 2^28085464212 is an apocalyptic number.

It is an amenable number.

28085464212 is an abundant number, since it is smaller than the sum of its proper divisors (42600358380).

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

28085464212 is a wasteful number, since it uses less digits than its factorization.

28085464212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285968 (or 285966 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

The spelling of 28085464212 in words is "twenty-eight billion, eighty-five million, four hundred sixty-four thousand, two hundred twelve".