Base | Representation |
---|---|
bin | 111001111101… |
… | …1011011111000 |
3 | 2010011222020212 |
4 | 1303323123320 |
5 | 30234440013 |
6 | 3003210252 |
7 | 516211415 |
oct | 163733370 |
9 | 63158225 |
10 | 30390008 |
11 | 16177510 |
12 | a216988 |
13 | 63b066c |
14 | 407110c |
15 | 2a046a8 |
hex | 1cfb6f8 |
30390008 has 32 divisors (see below), whose sum is σ = 62512560. Its totient is φ = 13735680.
The previous prime is 30390001. The next prime is 30390011. The reversal of 30390008 is 80009303.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30390001) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16460 + ... + 18212.
Almost surely, 230390008 is an apocalyptic number.
It is an amenable number.
30390008 is an abundant number, since it is smaller than the sum of its proper divisors (32122552).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30390008 is a wasteful number, since it uses less digits than its factorization.
30390008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1967 (or 1963 counting only the distinct ones).
The product of its (nonzero) digits is 648, while the sum is 23.
The square root of 30390008 is about 5512.7133065306. The cubic root of 30390008 is about 312.0639524832.
The spelling of 30390008 in words is "thirty million, three hundred ninety thousand, eight".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.079 sec. • engine limits •