198858240 has 400 divisors, whose sum is σ = 819938592. Its totient is φ = 45121536.

The previous prime is 198858229. The next prime is 198858259. The reversal of 198858240 is 42858891.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1451452 + ... + 1451588.

Almost surely, 2^198858240 is an apocalyptic number.

198858240 is a gapful number since it is divisible by the number (10) 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 198858240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409969296).

198858240 is an abundant number, since it is smaller than the sum of its proper divisors (621080352).

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

198858240 is an equidigital number, since it uses as much as digits as its factorization.

198858240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 198858240 is about 14101.7105345415. The cubic root of 198858240 is about 583.6885810719.

The spelling of 198858240 in words is "one hundred ninety-eight million, eight hundred fifty-eight thousand, two hundred forty".