| Base | Representation |
|---|---|
| bin | 11000000100111… |
| … | …11101001101000 |
| 3 | 112002001200012000 |
| 4 | 30002133221220 |
| 5 | 403201334040 |
| 6 | 32013051000 |
| 7 | 5001543330 |
| oct | 1402375150 |
| 9 | 462050160 |
| 10 | 201980520 |
| 11 | a4015a55 |
| 12 | 57786a60 |
| 13 | 32acb901 |
| 14 | 1cb7a0c0 |
| 15 | 12aeb130 |
| hex | c09fa68 |
201980520 has 128 divisors (see below), whose sum is σ = 769478400. Its totient is φ = 46165248.
The previous prime is 201980501. The next prime is 201980539. The reversal of 201980520 is 25089102.
It is an interprime number because it is at equal distance from previous prime (201980501) and next prime (201980539).
It is a super-2 number, since 2×2019805202 = 81592260918940800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5799 + ... + 20918.
It is an arithmetic number, because the mean of its divisors is an integer number (6011550).
Almost surely, 2201980520 is an apocalyptic number.
201980520 is a gapful number since it is divisible by the number (20) 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 201980520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384739200).
201980520 is an abundant number, since it is smaller than the sum of its proper divisors (567497880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
201980520 is a wasteful number, since it uses less digits than its factorization.
201980520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26744 (or 26734 counting only the distinct ones).
The product of its (nonzero) digits is 1440, while the sum is 27.
The square root of 201980520 is about 14211.9850830206. The cubic root of 201980520 is about 586.7275691480.
It can be divided in two parts, 201980 and 520, that added together give a square (202500 = 4502).
The spelling of 201980520 in words is "two hundred one million, nine hundred eighty thousand, five hundred twenty".
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