998312 has 16 divisors (see below), whose sum is σ = 2139360. Its totient is φ = 427824.

The previous prime is 998311. The next prime is 998329. The reversal of 998312 is 213899.

It is not an unprimeable number, because it can be changed into a prime (998311) 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, 8858 + ... + 8969.

It is an arithmetic number, because the mean of its divisors is an integer number (133710).

2⁹⁹⁸³¹² is an apocalyptic number.

It is an amenable number.

998312 is an abundant number, since it is smaller than the sum of its proper divisors (1141048).

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

998312 is a wasteful number, since it uses less digits than its factorization.

998312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17840 (or 17836 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 998312 is about 999.1556435311. The cubic root of 998312 is about 99.9437016442.

The spelling of 998312 in words is "nine hundred ninety-eight thousand, three hundred twelve".