28552128222 has 32 divisors (see below), whose sum is σ = 57332177280. Its totient is φ = 9479463840.

The previous prime is 28552128197. The next prime is 28552128223. The reversal of 28552128222 is 22282125582.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28552128223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1615429 + ... + 1633007.

It is an arithmetic number, because the mean of its divisors is an integer number (1791630540).

Almost surely, 2^28552128222 is an apocalyptic number.

28552128222 is an abundant number, since it is smaller than the sum of its proper divisors (28780049058).

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

28552128222 is a wasteful number, since it uses less digits than its factorization.

28552128222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18648.

The product of its digits is 102400, while the sum is 39.

The spelling of 28552128222 in words is "twenty-eight billion, five hundred fifty-two million, one hundred twenty-eight thousand, two hundred twenty-two".