998130 has 64 divisors (see below), whose sum is σ = 2822400. Its totient is φ = 225792.

The previous prime is 998117. The next prime is 998147. The reversal of 998130 is 31899.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

998130 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 31 ways as a sum of consecutive naturals, for example, 10242 + ... + 10338.

It is an arithmetic number, because the mean of its divisors is an integer number (44100).

2⁹⁹⁸¹³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411200).

998130 is an abundant number, since it is smaller than the sum of its proper divisors (1824270).

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

998130 is a wasteful number, since it uses less digits than its factorization.

998130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 998130 is about 999.0645624783. The cubic root of 998130 is about 99.9376277718.

It can be divided in two parts, 9981 and 30, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 998130 in words is "nine hundred ninety-eight thousand, one hundred thirty".