998820732 has 96 divisors (see below), whose sum is σ = 2883589632. Its totient is φ = 262031616.

The previous prime is 998820731. The next prime is 998820749. The reversal of 998820732 is 237028899.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998820731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212803 + ... + 217445.

It is an arithmetic number, because the mean of its divisors is an integer number (30037392).

Almost surely, 2^998820732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998820732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441794816).

998820732 is an abundant number, since it is smaller than the sum of its proper divisors (1884768900).

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

998820732 is a wasteful number, since it uses less digits than its factorization.

998820732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867 (or 4865 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 998820732 is about 31604.1252370636. The cubic root of 998820732 is about 999.6067560461.

The spelling of 998820732 in words is "nine hundred ninety-eight million, eight hundred twenty thousand, seven hundred thirty-two".