998557296 has 160 divisors (see below), whose sum is σ = 2909813760. Its totient is φ = 292454400.

The previous prime is 998557283. The next prime is 998557297. The reversal of 998557296 is 692755899.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998557297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4177945 + ... + 4178183.

It is an arithmetic number, because the mean of its divisors is an integer number (18186336).

Almost surely, 2^998557296 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 998557296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1454906880).

998557296 is an abundant number, since it is smaller than the sum of its proper divisors (1911256464).

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

998557296 is a wasteful number, since it uses less digits than its factorization.

998557296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 489 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 60.

The square root of 998557296 is about 31599.9572151609. The cubic root of 998557296 is about 999.5188672150.

The spelling of 998557296 in words is "nine hundred ninety-eight million, five hundred fifty-seven thousand, two hundred ninety-six".