998322 has 16 divisors (see below), whose sum is σ = 2150400. Its totient is φ = 307152.

The previous prime is 998311. The next prime is 998329. The reversal of 998322 is 223899.

It is a nialpdrome in base 10.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998322.

It is not an unprimeable number, because it can be changed into a prime (998329) by changing a digit.

998322 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6322 + ... + 6477.

It is an arithmetic number, because the mean of its divisors is an integer number (134400).

2⁹⁹⁸³²² is an apocalyptic number.

998322 is an abundant number, since it is smaller than the sum of its proper divisors (1152078).

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

998322 is a wasteful number, since it uses less digits than its factorization.

998322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12817.

The product of its digits is 7776, while the sum is 33.

The square root of 998322 is about 999.1606477439. The cubic root of 998322 is about 99.9440353521.

Adding to 998322 its reverse (223899), we get a palindrome (1222221).

The spelling of 998322 in words is "nine hundred ninety-eight thousand, three hundred twenty-two".