28052008212 has 48 divisors (see below), whose sum is σ = 69286472640. Its totient is φ = 8818268928.

The previous prime is 28052008189. The next prime is 28052008247. The reversal of 28052008212 is 21280025082.

It is a super-2 number, since 2×28052008212² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28052008212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 922353 + ... + 952280.

It is an arithmetic number, because the mean of its divisors is an integer number (1443468180).

Almost surely, 2^28052008212 is an apocalyptic number.

It is an amenable number.

28052008212 is an abundant number, since it is smaller than the sum of its proper divisors (41234464428).

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

28052008212 is a wasteful number, since it uses less digits than its factorization.

28052008212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874712 (or 1874710 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The spelling of 28052008212 in words is "twenty-eight billion, fifty-two million, eight thousand, two hundred twelve".