198237340 has 144 divisors (see below), whose sum is σ = 522964512. Its totient is φ = 62705664.

The previous prime is 198237329. The next prime is 198237383. The reversal of 198237340 is 43732891.

It is a self number, because there is not a number n which added to its sum of digits gives 198237340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1216099 + ... + 1216261.

It is an arithmetic number, because the mean of its divisors is an integer number (3631698).

Almost surely, 2^198237340 is an apocalyptic number.

198237340 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 198237340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261482256).

198237340 is an abundant number, since it is smaller than the sum of its proper divisors (324727172).

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

198237340 is a wasteful number, since it uses less digits than its factorization.

198237340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 198237340 is about 14079.6782633695. The cubic root of 198237340 is about 583.0804592842.

The spelling of 198237340 in words is "one hundred ninety-eight million, two hundred thirty-seven thousand, three hundred forty".