Base | Representation |
---|---|
bin | 100110010101… |
… | …1010001111110 |
3 | 1101211012022200 |
4 | 1030223101332 |
5 | 20121201342 |
6 | 1554452330 |
7 | 332564142 |
oct | 114532176 |
9 | 41735280 |
10 | 20100222 |
11 | 1038965a |
12 | 68940a6 |
13 | 4219c2c |
14 | 2953222 |
15 | 1b7094c |
hex | 132b47e |
20100222 has 24 divisors (see below), whose sum is σ = 46112976. Its totient is φ = 6305856.
The previous prime is 20100217. The next prime is 20100251. The reversal of 20100222 is 22200102.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32538 + ... + 33149.
It is an arithmetic number, because the mean of its divisors is an integer number (1921374).
Almost surely, 220100222 is an apocalyptic number.
20100222 is an abundant number, since it is smaller than the sum of its proper divisors (26012754).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20100222 is a wasteful number, since it uses less digits than its factorization.
20100222 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 65712 (or 65709 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 9.
The square root of 20100222 is about 4483.3271127590. The cubic root of 20100222 is about 271.8944136751.
Adding to 20100222 its reverse (22200102), we get a palindrome (42300324).
The spelling of 20100222 in words is "twenty million, one hundred thousand, two hundred twenty-two".
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