Base | Representation |
---|---|
bin | 111010000111… |
… | …0111110110001 |
3 | 2010100001001221 |
4 | 1310032332301 |
5 | 30300020230 |
6 | 3005025041 |
7 | 516664003 |
oct | 164167661 |
9 | 63301057 |
10 | 30470065 |
11 | 1622167a |
12 | a255181 |
13 | 640ac32 |
14 | 4092373 |
15 | 2a1d27a |
hex | 1d0efb1 |
30470065 has 4 divisors (see below), whose sum is σ = 36564084. Its totient is φ = 24376048.
The previous prime is 30470023. The next prime is 30470131. The reversal of 30470065 is 56007403.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56007403 = 2609 ⋅21467.
It can be written as a sum of positive squares in 2 ways, for example, as 6145441 + 24324624 = 2479^2 + 4932^2 .
It is a cyclic number.
It is not a de Polignac number, because 30470065 - 29 = 30469553 is a prime.
It is a super-2 number, since 2×304700652 = 1856849722208450, which contains 22 as substring.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3047002 + ... + 3047011.
It is an arithmetic number, because the mean of its divisors is an integer number (9141021).
Almost surely, 230470065 is an apocalyptic number.
It is an amenable number.
30470065 is a deficient number, since it is larger than the sum of its proper divisors (6094019).
30470065 is an equidigital number, since it uses as much as digits as its factorization.
30470065 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6094018.
The product of its (nonzero) digits is 2520, while the sum is 25.
The square root of 30470065 is about 5519.9696557137. The cubic root of 30470065 is about 312.3377376282.
Adding to 30470065 its reverse (56007403), we get a palindrome (86477468).
The spelling of 30470065 in words is "thirty million, four hundred seventy thousand, sixty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.071 sec. • engine limits •