Base | Representation |
---|---|
bin | 111010000111… |
… | …1100000110001 |
3 | 2010100011001112 |
4 | 1310033200301 |
5 | 30300102431 |
6 | 3005043105 |
7 | 520003232 |
oct | 164174061 |
9 | 63304045 |
10 | 30472241 |
11 | 16223278 |
12 | a256495 |
13 | 640bc17 |
14 | 4093089 |
15 | 2a1dc2b |
hex | 1d0f831 |
30472241 has 4 divisors (see below), whose sum is σ = 30768192. Its totient is φ = 30176292.
The previous prime is 30472231. The next prime is 30472249. The reversal of 30472241 is 14227403.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14227403 = 617 ⋅23059.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30472241 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30472249) 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, 147821 + ... + 148026.
It is an arithmetic number, because the mean of its divisors is an integer number (7692048).
Almost surely, 230472241 is an apocalyptic number.
It is an amenable number.
30472241 is a deficient number, since it is larger than the sum of its proper divisors (295951).
30472241 is a wasteful number, since it uses less digits than its factorization.
30472241 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 295950.
The product of its (nonzero) digits is 1344, while the sum is 23.
The square root of 30472241 is about 5520.1667547276. The cubic root of 30472241 is about 312.3451725838.
Adding to 30472241 its reverse (14227403), we get a palindrome (44699644).
The spelling of 30472241 in words is "thirty million, four hundred seventy-two thousand, two hundred forty-one".
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