Base | Representation |
---|---|
bin | 111001110000… |
… | …0100101110110 |
3 | 2002222101102111 |
4 | 1303200211312 |
5 | 30222430204 |
6 | 3001001234 |
7 | 515243020 |
oct | 163404566 |
9 | 62871374 |
10 | 30280054 |
11 | 16101942 |
12 | a18321a |
13 | 63725bc |
14 | 4043010 |
15 | 29d1d04 |
hex | 1ce0976 |
30280054 has 16 divisors (see below), whose sum is σ = 51991200. Its totient is φ = 12956544.
The previous prime is 30280051. The next prime is 30280057. The reversal of 30280054 is 45008203.
It is an interprime number because it is at equal distance from previous prime (30280051) and next prime (30280057).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30280051) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10302 + ... + 12910.
It is an arithmetic number, because the mean of its divisors is an integer number (3249450).
Almost surely, 230280054 is an apocalyptic number.
30280054 is a deficient number, since it is larger than the sum of its proper divisors (21711146).
30280054 is a wasteful number, since it uses less digits than its factorization.
30280054 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3447.
The product of its (nonzero) digits is 960, while the sum is 22.
The square root of 30280054 is about 5502.7315035353. The cubic root of 30280054 is about 311.6871384394.
Adding to 30280054 its reverse (45008203), we get a palindrome (75288257).
The spelling of 30280054 in words is "thirty million, two hundred eighty thousand, fifty-four".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.122 sec. • engine limits •