Base | Representation |
---|---|
bin | 10111111101100… |
… | …00110011101100 |
3 | 112000012222012200 |
4 | 23332300303230 |
5 | 402424032340 |
6 | 31540101500 |
7 | 4660330206 |
oct | 1376606354 |
9 | 460188180 |
10 | 201002220 |
11 | a3507a41 |
12 | 57394890 |
13 | 32848533 |
14 | 1c9a3776 |
15 | 129a6330 |
hex | bfb0cec |
201002220 has 72 divisors (see below), whose sum is σ = 645581664. Its totient is φ = 50446848.
The previous prime is 201002189. The next prime is 201002227. The reversal of 201002220 is 22200102.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is not an unprimeable number, because it can be changed into a prime (201002227) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29784 + ... + 35903.
It is an arithmetic number, because the mean of its divisors is an integer number (8966412).
Almost surely, 2201002220 is an apocalyptic number.
201002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
201002220 is an abundant number, since it is smaller than the sum of its proper divisors (444579444).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
201002220 is a wasteful number, since it uses less digits than its factorization.
201002220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 65719 (or 65714 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 9.
The square root of 201002220 is about 14177.5251719050. The cubic root of 201002220 is about 585.7787568476.
Adding to 201002220 its reverse (22200102), we get a palindrome (223202322).
The spelling of 201002220 in words is "two hundred one million, two thousand, two hundred twenty".
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