998274888 has 384 divisors, whose sum is σ = 3320352000. Its totient is φ = 276756480.

The previous prime is 998274881. The next prime is 998274919. The reversal of 998274888 is 888472899.

It is a happy number.

It is a super-2 number, since 2×998274888² = 1993105504022825088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (998274881) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24348148 + ... + 24348188.

It is an arithmetic number, because the mean of its divisors is an integer number (8646750).

Almost surely, 2^998274888 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 998274888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1660176000).

998274888 is an abundant number, since it is smaller than the sum of its proper divisors (2322077112).

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

998274888 is a wasteful number, since it uses less digits than its factorization.

998274888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 111 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 63.

The square root of 998274888 is about 31595.4884121135. The cubic root of 998274888 is about 999.4246316815.

The spelling of 998274888 in words is "nine hundred ninety-eight million, two hundred seventy-four thousand, eight hundred eighty-eight".