| Base | Representation |
|---|---|
| bin | 10111101100011… |
| … | …10011111111100 |
| 3 | 111212000021200122 |
| 4 | 23312032133330 |
| 5 | 401340431130 |
| 6 | 31420114112 |
| 7 | 4632320312 |
| oct | 1366163774 |
| 9 | 455007618 |
| 10 | 198764540 |
| 11 | a2219817 |
| 12 | 56695938 |
| 13 | 32243b70 |
| 14 | 1c5800b2 |
| 15 | 126b32e5 |
| hex | bd8e7fc |
198764540 has 48 divisors (see below), whose sum is σ = 450751392. Its totient is φ = 73188096.
The previous prime is 198764539. The next prime is 198764549. The reversal of 198764540 is 45467891.
198764540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×1987645402 = 79014684722823200, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 198764491 and 198764500.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (198764549) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120602 + ... + 122238.
It is an arithmetic number, because the mean of its divisors is an integer number (9390654).
Almost surely, 2198764540 is an apocalyptic number.
198764540 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 198764540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225375696).
198764540 is an abundant number, since it is smaller than the sum of its proper divisors (251986852).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
198764540 is a wasteful number, since it uses less digits than its factorization.
198764540 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2126 (or 2124 counting only the distinct ones).
The product of its (nonzero) digits is 241920, while the sum is 44.
The square root of 198764540 is about 14098.3878510984. The cubic root of 198764540 is about 583.5968906088.
The spelling of 198764540 in words is "one hundred ninety-eight million, seven hundred sixty-four thousand, five hundred forty".
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