28392222810 has 128 divisors (see below), whose sum is σ = 81344839680. Its totient is φ = 6201144576.

The previous prime is 28392222769. The next prime is 28392222811. The reversal of 28392222810 is 1822229382.

It is a happy number.

It is a super-2 number, since 2×28392222810² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28392222811) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5933679 + ... + 5938461.

It is an arithmetic number, because the mean of its divisors is an integer number (635506560).

Almost surely, 2^28392222810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28392222810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40672419840).

28392222810 is an abundant number, since it is smaller than the sum of its proper divisors (52952616870).

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

28392222810 is a wasteful number, since it uses less digits than its factorization.

28392222810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052.

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 28392222810 in words is "twenty-eight billion, three hundred ninety-two million, two hundred twenty-two thousand, eight hundred ten".