Base | Representation |
---|---|
bin | 111010110110… |
… | …0110100101000 |
3 | 2011001120100001 |
4 | 1311230310220 |
5 | 30344320230 |
6 | 3021152344 |
7 | 523154431 |
oct | 165546450 |
9 | 64046301 |
10 | 30854440 |
11 | 16464441 |
12 | a3bb6b4 |
13 | 6513b86 |
14 | 4152488 |
15 | 2a970ca |
hex | 1d6cd28 |
30854440 has 32 divisors (see below), whose sum is σ = 69608160. Its totient is φ = 12308800.
The previous prime is 30854429. The next prime is 30854459. The reversal of 30854440 is 4445803.
30854440 is a nontrivial binomial coefficient, being equal to C(7856, 2).
It is a junction number, because it is equal to n+sod(n) for n = 30854399 and 30854408.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18855 + ... + 20425.
It is an arithmetic number, because the mean of its divisors is an integer number (2175255).
Almost surely, 230854440 is an apocalyptic number.
30854440 is the 7855-th triangular number and also the 3928-th hexagonal number.
30854440 is the 2619-th centered nonagonal number.
It is an amenable number.
30854440 is an abundant number, since it is smaller than the sum of its proper divisors (38753720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30854440 is a wasteful number, since it uses less digits than its factorization.
30854440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2073 (or 2069 counting only the distinct ones).
The product of its (nonzero) digits is 7680, while the sum is 28.
The square root of 30854440 is about 5554.6773083591. The cubic root of 30854440 is about 313.6456169324.
The spelling of 30854440 in words is "thirty million, eight hundred fifty-four thousand, four hundred forty".
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