28222177300 has 18 divisors (see below), whose sum is σ = 61242124958. Its totient is φ = 11288870880.

The previous prime is 28222177297. The next prime is 28222177331. The reversal of 28222177300 is 377122282.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7584516 + 28214592784 = 2754^2 + 167972^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141110787 + ... + 141110986.

Almost surely, 2^28222177300 is an apocalyptic number.

28222177300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28222177300 is an abundant number, since it is smaller than the sum of its proper divisors (33019947658).

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

28222177300 is a wasteful number, since it uses less digits than its factorization.

28222177300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282221787 (or 282221780 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

Adding to 28222177300 its reverse (377122282), we get a palindrome (28599299582).

The spelling of 28222177300 in words is "twenty-eight billion, two hundred twenty-two million, one hundred seventy-seven thousand, three hundred".