Base | Representation |
---|---|
bin | 111001010100… |
… | …1011010011111 |
3 | 2002112220101212 |
4 | 1302221122133 |
5 | 30143212142 |
6 | 2552055035 |
7 | 513312062 |
oct | 162513237 |
9 | 62486355 |
10 | 30054047 |
11 | 15a68061 |
12 | a09447b |
13 | 62c377a |
14 | 3dc48d9 |
15 | 2989d82 |
hex | 1ca969f |
30054047 has 4 divisors (see below), whose sum is σ = 30076536. Its totient is φ = 30031560.
The previous prime is 30054043. The next prime is 30054083. The reversal of 30054047 is 74045003.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74045003 = 601 ⋅123203.
It is a cyclic number.
It is not a de Polignac number, because 30054047 - 22 = 30054043 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30054043) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9104 + ... + 11957.
It is an arithmetic number, because the mean of its divisors is an integer number (7519134).
Almost surely, 230054047 is an apocalyptic number.
30054047 is a deficient number, since it is larger than the sum of its proper divisors (22489).
30054047 is a wasteful number, since it uses less digits than its factorization.
30054047 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 22488.
The product of its (nonzero) digits is 1680, while the sum is 23.
The square root of 30054047 is about 5482.1571484225. The cubic root of 30054047 is about 310.9097348692.
The spelling of 30054047 in words is "thirty million, fifty-four thousand, forty-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •