Base | Representation |
---|---|
bin | 1100100001110010111… |
… | …1001111101110011110 |
3 | 202120112210011212020120 |
4 | 3020130233033232132 |
5 | 12011243002341110 |
6 | 242513040455410 |
7 | 21356420111112 |
oct | 3103457175636 |
9 | 676483155216 |
10 | 215230512030 |
11 | 83308016326 |
12 | 3586831a566 |
13 | 173b0846581 |
14 | a5bab8b742 |
15 | 58ea61d870 |
hex | 321cbcfb9e |
215230512030 has 64 divisors (see below), whose sum is σ = 517379788800. Its totient is φ = 57303058176.
The previous prime is 215230512011. The next prime is 215230512041. The reversal of 215230512030 is 30215032512.
It is a happy number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89940514 + ... + 89942906.
It is an arithmetic number, because the mean of its divisors is an integer number (8084059200).
Almost surely, 2215230512030 is an apocalyptic number.
215230512030 is an abundant number, since it is smaller than the sum of its proper divisors (302149276770).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
215230512030 is a wasteful number, since it uses less digits than its factorization.
215230512030 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5945.
The product of its (nonzero) digits is 1800, while the sum is 24.
Adding to 215230512030 its reverse (30215032512), we get a palindrome (245445544542).
The spelling of 215230512030 in words is "two hundred fifteen billion, two hundred thirty million, five hundred twelve thousand, thirty".
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