28856654122 has 4 divisors (see below), whose sum is σ = 43284981186. Its totient is φ = 14428327060.

The previous prime is 28856654117. The next prime is 28856654129. The reversal of 28856654122 is 22145665882.

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

It can be written as a sum of positive squares in only one way, i.e., 26952117241 + 1904536881 = 164171^2 + 43641^2 .

It is not an unprimeable number, because it can be changed into a prime (28856654129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7214163529 + ... + 7214163532.

Almost surely, 2^28856654122 is an apocalyptic number.

28856654122 is a deficient number, since it is larger than the sum of its proper divisors (14428327064).

28856654122 is a wasteful number, since it uses less digits than its factorization.

28856654122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14428327063.

The product of its digits is 1843200, while the sum is 49.

The spelling of 28856654122 in words is "twenty-eight billion, eight hundred fifty-six million, six hundred fifty-four thousand, one hundred twenty-two".