Base | Representation |
---|---|
bin | 11100001000110110… |
… | …010100111010001100 |
3 | 2212222121112010020200 |
4 | 130020312110322030 |
5 | 443334041331340 |
6 | 21514010213500 |
7 | 2116466135205 |
oct | 341066247214 |
9 | 85877463220 |
10 | 30213230220 |
11 | 118a4643058 |
12 | 5a32424290 |
13 | 2b06602324 |
14 | 16688b25ac |
15 | bbc6e8330 |
hex | 708d94e8c |
30213230220 has 72 divisors (see below), whose sum is σ = 91731704064. Its totient is φ = 8049397248.
The previous prime is 30213230219. The next prime is 30213230227. The reversal of 30213230220 is 2203231203.
It is a happy number.
30213230220 is a `hidden beast` number, since 3 + 0 + 213 + 230 + 220 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 30213230193 and 30213230202.
It is not an unprimeable number, because it can be changed into a prime (30213230227) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118452 + ... + 272868.
Almost surely, 230213230220 is an apocalyptic number.
30213230220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
30213230220 is an abundant number, since it is smaller than the sum of its proper divisors (61518473844).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30213230220 is a wasteful number, since it uses less digits than its factorization.
30213230220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 155519 (or 155514 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 18.
Adding to 30213230220 its reverse (2203231203), we get a palindrome (32416461423).
The spelling of 30213230220 in words is "thirty billion, two hundred thirteen million, two hundred thirty thousand, two hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •