998887500 has 216 divisors, whose sum is σ = 3403750896. Its totient is φ = 245520000.

The previous prime is 998887481. The next prime is 998887529. The reversal of 998887500 is 5788899.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1462159 + ... + 1462841.

It is an arithmetic number, because the mean of its divisors is an integer number (15758106).

Almost surely, 2^998887500 is an apocalyptic number.

998887500 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998887500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701875448).

998887500 is an abundant number, since it is smaller than the sum of its proper divisors (2404863396).

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

998887500 is a wasteful number, since it uses less digits than its factorization.

998887500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The square root of 998887500 is about 31605.1815372100. The cubic root of 998887500 is about 999.6290290642.

The spelling of 998887500 in words is "nine hundred ninety-eight million, eight hundred eighty-seven thousand, five hundred".