Base | Representation |
---|---|
bin | 111001100000… |
… | …1001000111110 |
3 | 2002201211201020 |
4 | 1303001020332 |
5 | 30204314410 |
6 | 2554125010 |
7 | 514165314 |
oct | 163011076 |
9 | 62654636 |
10 | 30151230 |
11 | 1602407a |
12 | a120766 |
13 | 6328a85 |
14 | 400c0b4 |
15 | 29a8a70 |
hex | 1cc123e |
30151230 has 16 divisors (see below), whose sum is σ = 72363024. Its totient is φ = 8040320.
The previous prime is 30151211. The next prime is 30151237. The reversal of 30151230 is 3215103.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30151237) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502491 + ... + 502550.
It is an arithmetic number, because the mean of its divisors is an integer number (4522689).
Almost surely, 230151230 is an apocalyptic number.
30151230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
30151230 is an abundant number, since it is smaller than the sum of its proper divisors (42211794).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30151230 is a wasteful number, since it uses less digits than its factorization.
30151230 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1005051.
The product of its (nonzero) digits is 90, while the sum is 15.
The square root of 30151230 is about 5491.0135676394. The cubic root of 30151230 is about 311.2444943462.
Adding to 30151230 its reverse (3215103), we get a palindrome (33366333).
It can be divided in two parts, 30151 and 230, that added together give a triangular number (30381 = T246).
The spelling of 30151230 in words is "thirty million, one hundred fifty-one thousand, two hundred thirty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.064 sec. • engine limits •