28917166802 has 8 divisors (see below), whose sum is σ = 43381706700. Its totient is φ = 14456597904.

The previous prime is 28917166801. The next prime is 28917166819. The reversal of 28917166802 is 20866171982.

It can be written as a sum of positive squares in 2 ways, for example, as 28076688721 + 840478081 = 167561^2 + 28991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28917166801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974477 + ... + 1003712.

Almost surely, 2^28917166802 is an apocalyptic number.

28917166802 is a deficient number, since it is larger than the sum of its proper divisors (14464539898).

28917166802 is a wasteful number, since it uses less digits than its factorization.

28917166802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985500.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 28917166802 in words is "twenty-eight billion, nine hundred seventeen million, one hundred sixty-six thousand, eight hundred two".