Base | Representation |
---|---|
bin | 11011111101011010… |
… | …001011110000100010 |
3 | 2212111020101020001100 |
4 | 123331122023300202 |
5 | 442440423201310 |
6 | 21442552415230 |
7 | 2111645603454 |
oct | 337532136042 |
9 | 85436336040 |
10 | 30021303330 |
11 | 11806274597 |
12 | 599a0a7516 |
13 | 2aa5913815 |
14 | 164b1d22d4 |
15 | baa935ec0 |
hex | 6fd68bc22 |
30021303330 has 24 divisors (see below), whose sum is σ = 78055388892. Its totient is φ = 8005680864.
The previous prime is 30021303317. The next prime is 30021303331. The reversal of 30021303330 is 3330312003.
30021303330 is a `hidden beast` number, since 30 + 0 + 2 + 1 + 303 + 330 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 29162051361 + 859251969 = 170769^2 + 29313^2 .
It is a Harshad number since it is a multiple of its sum of digits (18).
It is not an unprimeable number, because it can be changed into a prime (30021303331) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166784929 + ... + 166785108.
Almost surely, 230021303330 is an apocalyptic number.
30021303330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
30021303330 is an abundant number, since it is smaller than the sum of its proper divisors (48034085562).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30021303330 is a wasteful number, since it uses less digits than its factorization.
30021303330 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 333570050 (or 333570047 counting only the distinct ones).
The product of its (nonzero) digits is 486, while the sum is 18.
Adding to 30021303330 its reverse (3330312003), we get a palindrome (33351615333).
The spelling of 30021303330 in words is "thirty billion, twenty-one million, three hundred three thousand, three hundred thirty".
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