Base | Representation |
---|---|
bin | 111010110000… |
… | …1011111010111 |
3 | 2010222012122220 |
4 | 1311201133113 |
5 | 30341324043 |
6 | 3020153423 |
7 | 522602211 |
oct | 165413727 |
9 | 63865586 |
10 | 30808023 |
11 | 16432584 |
12 | a398873 |
13 | 64c89cc |
14 | 413d5b1 |
15 | 2a88483 |
hex | 1d617d7 |
30808023 has 8 divisors (see below), whose sum is σ = 41572608. Its totient is φ = 20291064.
The previous prime is 30808003. The next prime is 30808027. The reversal of 30808023 is 32080803.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30808023 - 28 = 30807767 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 30807984 and 30808002.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30808027) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61615 + ... + 62112.
It is an arithmetic number, because the mean of its divisors is an integer number (5196576).
Almost surely, 230808023 is an apocalyptic number.
30808023 is a deficient number, since it is larger than the sum of its proper divisors (10764585).
30808023 is a wasteful number, since it uses less digits than its factorization.
30808023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 123813.
The product of its (nonzero) digits is 1152, while the sum is 24.
The square root of 30808023 is about 5550.4975452656. The cubic root of 30808023 is about 313.4882565953.
Adding to 30808023 its reverse (32080803), we get a palindrome (62888826).
The spelling of 30808023 in words is "thirty million, eight hundred eight thousand, twenty-three".
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