Base | Representation |
---|---|
bin | 111010101110… |
… | …1101011000001 |
3 | 2010221102012201 |
4 | 1311131223001 |
5 | 30340324020 |
6 | 3015553201 |
7 | 522505501 |
oct | 165355301 |
9 | 63842181 |
10 | 30792385 |
11 | 16421858 |
12 | a38b801 |
13 | 64c1860 |
14 | 4137a01 |
15 | 2a83a0a |
hex | 1d5dac1 |
30792385 has 8 divisors (see below), whose sum is σ = 39793320. Its totient is φ = 22738944.
The previous prime is 30792367. The next prime is 30792397. The reversal of 30792385 is 58329703.
It can be written as a sum of positive squares in 4 ways, for example, as 1718721 + 29073664 = 1311^2 + 5392^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30792385 - 211 = 30790337 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236800 + ... + 236929.
It is an arithmetic number, because the mean of its divisors is an integer number (4974165).
Almost surely, 230792385 is an apocalyptic number.
It is an amenable number.
30792385 is a deficient number, since it is larger than the sum of its proper divisors (9000935).
30792385 is a wasteful number, since it uses less digits than its factorization.
30792385 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 473747.
The product of its (nonzero) digits is 45360, while the sum is 37.
The square root of 30792385 is about 5549.0886639159. The cubic root of 30792385 is about 313.4352059224.
Subtracting from 30792385 its product of nonzero digits (45360), we obtain a square (30747025 = 55452).
The spelling of 30792385 in words is "thirty million, seven hundred ninety-two thousand, three hundred eighty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.079 sec. • engine limits •