Base | Representation |
---|---|
bin | 111001101011… |
… | …0100000010101 |
3 | 2002220021202101 |
4 | 1303112200111 |
5 | 30220114431 |
6 | 3000042101 |
7 | 515011411 |
oct | 163264025 |
9 | 62807671 |
10 | 30238741 |
11 | 160838a5 |
12 | a163331 |
13 | 6359860 |
14 | 4031d41 |
15 | 29c4961 |
hex | 1cd6815 |
30238741 has 4 divisors (see below), whose sum is σ = 32564812. Its totient is φ = 27912672.
The previous prime is 30238727. The next prime is 30238783. The reversal of 30238741 is 14783203.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14783203 = 2719 ⋅5437.
It can be written as a sum of positive squares in 2 ways, for example, as 19838116 + 10400625 = 4454^2 + 3225^2 .
It is a cyclic number.
It is not a de Polignac number, because 30238741 - 27 = 30238613 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 (30238711) 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, 1163016 + ... + 1163041.
It is an arithmetic number, because the mean of its divisors is an integer number (8141203).
Almost surely, 230238741 is an apocalyptic number.
It is an amenable number.
30238741 is a deficient number, since it is larger than the sum of its proper divisors (2326071).
30238741 is a wasteful number, since it uses less digits than its factorization.
30238741 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2326070.
The product of its (nonzero) digits is 4032, while the sum is 28.
The square root of 30238741 is about 5498.9763592872. The cubic root of 30238741 is about 311.5453224068.
The spelling of 30238741 in words is "thirty million, two hundred thirty-eight thousand, seven hundred forty-one".
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