Base | Representation |
---|---|
bin | 111001110011… |
… | …1010111011001 |
3 | 2010000210111011 |
4 | 1303213113121 |
5 | 30224322201 |
6 | 3001333521 |
7 | 515416636 |
oct | 163472731 |
9 | 63023434 |
10 | 30307801 |
11 | 16120777 |
12 | a1972a1 |
13 | 6382114 |
14 | 404d18d |
15 | 29da151 |
hex | 1ce75d9 |
30307801 has 4 divisors (see below), whose sum is σ = 31285504. Its totient is φ = 29330100.
The previous prime is 30307799. The next prime is 30307811. The reversal of 30307801 is 10870303.
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: 10870303 = 349 ⋅31147.
It is a cyclic number.
It is not a de Polignac number, because 30307801 - 21 = 30307799 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30307811) 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, 488805 + ... + 488866.
It is an arithmetic number, because the mean of its divisors is an integer number (7821376).
Almost surely, 230307801 is an apocalyptic number.
30307801 is a gapful number since it is divisible by the number (31) formed by its first and last digit.
It is an amenable number.
30307801 is a deficient number, since it is larger than the sum of its proper divisors (977703).
30307801 is an equidigital number, since it uses as much as digits as its factorization.
30307801 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 977702.
The product of its (nonzero) digits is 504, while the sum is 22.
The square root of 30307801 is about 5505.2521286495. The cubic root of 30307801 is about 311.7823137732.
The spelling of 30307801 in words is "thirty million, three hundred seven thousand, eight hundred one".
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