128822 has 8 divisors (see below), whose sum is σ = 198072. Its totient is φ = 62800.

The previous prime is 128819. The next prime is 128831. The reversal of 128822 is 228821.

128822 is nontrivially palindromic in base 7 and base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

128822 is an undulating number in base 15.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704 + ... + 867.

It is an arithmetic number, because the mean of its divisors is an integer number (24759).

2¹²⁸⁸²² is an apocalyptic number.

128822 is a deficient number, since it is larger than the sum of its proper divisors (69250).

128822 is a wasteful number, since it uses less digits than its factorization.

128822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614.

The product of its digits is 512, while the sum is 23.

The square root of 128822 is about 358.9178178915. The cubic root of 128822 is about 50.5044926239.

Subtracting 128822 from its reverse (228821), we obtain a palindrome (99999).

The spelling of 128822 in words is "one hundred twenty-eight thousand, eight hundred twenty-two".