28216862794 has 16 divisors (see below), whose sum is σ = 42688521216. Its totient is φ = 13987512000.

The previous prime is 28216862789. The next prime is 28216862797. The reversal of 28216862794 is 49726861282.

It is not an unprimeable number, because it can be changed into a prime (28216862797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330274 + ... + 406834.

It is an arithmetic number, because the mean of its divisors is an integer number (2668032576).

Almost surely, 2^28216862794 is an apocalyptic number.

28216862794 is a deficient number, since it is larger than the sum of its proper divisors (14471658422).

28216862794 is a wasteful number, since it uses less digits than its factorization.

28216862794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78141.

The product of its digits is 4644864, while the sum is 55.

The spelling of 28216862794 in words is "twenty-eight billion, two hundred sixteen million, eight hundred sixty-two thousand, seven hundred ninety-four".