Base | Representation |
---|---|
bin | 111001101101… |
… | …0110001110001 |
3 | 2002221011202112 |
4 | 1303122301301 |
5 | 30221144431 |
6 | 3000255105 |
7 | 515113421 |
oct | 163326161 |
9 | 62834675 |
10 | 30256241 |
11 | 16095a64 |
12 | a171495 |
13 | 6364802 |
14 | 4038481 |
15 | 29c9c2b |
hex | 1cdac71 |
30256241 has 4 divisors (see below), whose sum is σ = 30267300. Its totient is φ = 30245184.
The previous prime is 30256229. The next prime is 30256249. The reversal of 30256241 is 14265203.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14265203 = 2269 ⋅6287.
It can be written as a sum of positive squares in 2 ways, for example, as 6451600 + 23804641 = 2540^2 + 4879^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30256241 is a prime.
It is a super-3 number, since 3×302562413 (a number of 23 digits) contains 333 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30256249) 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, 1925 + ... + 8013.
It is an arithmetic number, because the mean of its divisors is an integer number (7566825).
Almost surely, 230256241 is an apocalyptic number.
It is an amenable number.
30256241 is a deficient number, since it is larger than the sum of its proper divisors (11059).
30256241 is an equidigital number, since it uses as much as digits as its factorization.
30256241 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11058.
The product of its (nonzero) digits is 1440, while the sum is 23.
The square root of 30256241 is about 5500.5673343756. The cubic root of 30256241 is about 311.6054107962.
It can be divided in two parts, 3025 and 6241, that multiplied together give a square (18879025 = 43452).
The spelling of 30256241 in words is "thirty million, two hundred fifty-six thousand, two hundred forty-one".
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