28216882774 has 4 divisors (see below), whose sum is σ = 42325324164. Its totient is φ = 14108441386.

The previous prime is 28216882739. The next prime is 28216882781. The reversal of 28216882774 is 47728861282.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7054220692 + ... + 7054220695.

It is an arithmetic number, because the mean of its divisors is an integer number (10581331041).

Almost surely, 2^28216882774 is an apocalyptic number.

28216882774 is a deficient number, since it is larger than the sum of its proper divisors (14108441390).

28216882774 is a wasteful number, since it uses less digits than its factorization.

28216882774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14108441389.

The product of its digits is 4816896, while the sum is 55.

The spelling of 28216882774 in words is "twenty-eight billion, two hundred sixteen million, eight hundred eighty-two thousand, seven hundred seventy-four".