Base | Representation |
---|---|
bin | 101000010011… |
… | …1011110010000 |
3 | 1110202200022010 |
4 | 1100213132100 |
5 | 20402230300 |
6 | 2032542520 |
7 | 344425554 |
oct | 120473620 |
9 | 43680263 |
10 | 21133200 |
11 | 10a24760 |
12 | 70b1a40 |
13 | 44bc16a |
14 | 2b41864 |
15 | 1cc6a50 |
hex | 1427790 |
21133200 has 120 divisors (see below), whose sum is σ = 73897056. Its totient is φ = 5120000.
The previous prime is 21133153. The next prime is 21133213. The reversal of 21133200 is 233112.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (120).
It is a super-2 number, since 2×211332002 = 893224284480000, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12400 + ... + 14000.
Almost surely, 221133200 is an apocalyptic number.
21133200 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 21133200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36948528).
21133200 is an abundant number, since it is smaller than the sum of its proper divisors (52763856).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21133200 is a wasteful number, since it uses less digits than its factorization.
21133200 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1633 (or 1622 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 12.
The square root of 21133200 is about 4597.0860335652. The cubic root of 21133200 is about 276.4745040676.
Adding to 21133200 its reverse (233112), we get a palindrome (21366312).
It can be divided in two parts, 211 and 33200, that added together give a triangular number (33411 = T258).
The spelling of 21133200 in words is "twenty-one million, one hundred thirty-three thousand, two hundred".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •