28499422566 has 16 divisors (see below), whose sum is σ = 57004261488. Its totient is φ = 9498904800.

The previous prime is 28499422537. The next prime is 28499422573. The reversal of 28499422566 is 66522499482.

It is a happy number.

It is a congruent number.

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, 155605 + ... + 284976.

It is an arithmetic number, because the mean of its divisors is an integer number (3562766343).

Almost surely, 2^28499422566 is an apocalyptic number.

28499422566 is an abundant number, since it is smaller than the sum of its proper divisors (28504838922).

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

28499422566 is a wasteful number, since it uses less digits than its factorization.

28499422566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451367.

The product of its digits is 14929920, while the sum is 57.

The spelling of 28499422566 in words is "twenty-eight billion, four hundred ninety-nine million, four hundred twenty-two thousand, five hundred sixty-six".