128922 has 8 divisors (see below), whose sum is σ = 257856. Its totient is φ = 42972.

The previous prime is 128903. The next prime is 128923. The reversal of 128922 is 229821.

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

128922 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 128892 and 128901.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 128922.

It is not an unprimeable number, because it can be changed into a prime (128923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10738 + ... + 10749.

It is an arithmetic number, because the mean of its divisors is an integer number (32232).

2¹²⁸⁹²² is an apocalyptic number.

128922 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128922 is a wasteful number, since it uses less digits than its factorization.

128922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21492.

The product of its digits is 576, while the sum is 24.

The square root of 128922 is about 359.0570985233. The cubic root of 128922 is about 50.5175575325.

The spelling of 128922 in words is "one hundred twenty-eight thousand, nine hundred twenty-two".