198136940 has 48 divisors (see below), whose sum is σ = 439219200. Its totient is φ = 74872512.

The previous prime is 198136933. The next prime is 198136951. The reversal of 198136940 is 49631891.

It is a super-3 number, since 3×198136940³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230231 + ... + 231089.

It is an arithmetic number, because the mean of its divisors is an integer number (9150400).

Almost surely, 2^198136940 is an apocalyptic number.

198136940 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 198136940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219609600).

198136940 is an abundant number, since it is smaller than the sum of its proper divisors (241082260).

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

198136940 is a wasteful number, since it uses less digits than its factorization.

198136940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 198136940 is about 14076.1123894348. The cubic root of 198136940 is about 582.9820063155.

The spelling of 198136940 in words is "one hundred ninety-eight million, one hundred thirty-six thousand, nine hundred forty".