28917166852 has 24 divisors (see below), whose sum is σ = 60348871296. Its totient is φ = 11854242048.

The previous prime is 28917166847. The next prime is 28917166871. The reversal of 28917166852 is 25866171982.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28917166793 and 28917166802.

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, 22450573 + ... + 22451860.

It is an arithmetic number, because the mean of its divisors is an integer number (2514536304).

Almost surely, 2^28917166852 is an apocalyptic number.

It is an amenable number.

28917166852 is an abundant number, since it is smaller than the sum of its proper divisors (31431704444).

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

28917166852 is a wasteful number, since it uses less digits than its factorization.

28917166852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44902467 (or 44902465 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 55.

The spelling of 28917166852 in words is "twenty-eight billion, nine hundred seventeen million, one hundred sixty-six thousand, eight hundred fifty-two".