998732124 has 72 divisors (see below), whose sum is σ = 2733249792. Its totient is φ = 305665920.

The previous prime is 998732123. The next prime is 998732143. The reversal of 998732124 is 421237899.

It is a self number, because there is not a number n which added to its sum of digits gives 998732124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998732123) 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 23 ways as a sum of consecutive naturals, for example, 83802 + ... + 94974.

Almost surely, 2^998732124 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 998732124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1366624896).

998732124 is an abundant number, since it is smaller than the sum of its proper divisors (1734517668).

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

998732124 is a wasteful number, since it uses less digits than its factorization.

998732124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11387 (or 11382 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 998732124 is about 31602.7233636597. The cubic root of 998732124 is about 999.5771959286.

The spelling of 998732124 in words is "nine hundred ninety-eight million, seven hundred thirty-two thousand, one hundred twenty-four".