998552250 has 96 divisors (see below), whose sum is σ = 2733127488. Its totient is φ = 263023200.

The previous prime is 998552213. The next prime is 998552251. The reversal of 998552250 is 52255899.

998552250 is a `hidden beast` number, since 9 + 98 + 552 + 2 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 998552196 and 998552205.

It is not an unprimeable number, because it can be changed into a prime (998552251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 184077 + ... + 189423.

It is an arithmetic number, because the mean of its divisors is an integer number (28470078).

Almost surely, 2^998552250 is an apocalyptic number.

998552250 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 998552250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1366563744).

998552250 is an abundant number, since it is smaller than the sum of its proper divisors (1734575238).

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

998552250 is a wasteful number, since it uses less digits than its factorization.

998552250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453 (or 5440 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 998552250 is about 31599.8773731798. The cubic root of 998552250 is about 999.5171835925.

The spelling of 998552250 in words is "nine hundred ninety-eight million, five hundred fifty-two thousand, two hundred fifty".