Base | Representation |
---|---|
bin | 11100011110100110… |
… | …110111011001100000 |
3 | 2220221001102100211101 |
4 | 130132212313121200 |
5 | 1000111014312221 |
6 | 22014130324144 |
7 | 2131521025345 |
oct | 343646673140 |
9 | 86831370741 |
10 | 30578275936 |
11 | 11a7170432a |
12 | 5b14729654 |
13 | 2b64125900 |
14 | 16a11787cc |
15 | bde7a4d91 |
hex | 71e9b7660 |
30578275936 has 144 divisors (see below), whose sum is σ = 69506035200. Its totient is φ = 13197510144.
The previous prime is 30578275927. The next prime is 30578275939. The reversal of 30578275936 is 63957287503.
It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30578275939) 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 23 ways as a sum of consecutive naturals, for example, 8115525 + ... + 8119291.
It is an arithmetic number, because the mean of its divisors is an integer number (482680800).
Almost surely, 230578275936 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30578275936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34753017600).
30578275936 is an abundant number, since it is smaller than the sum of its proper divisors (38927759264).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30578275936 is a wasteful number, since it uses less digits than its factorization.
30578275936 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3901 (or 3880 counting only the distinct ones).
The product of its (nonzero) digits is 9525600, while the sum is 55.
The spelling of 30578275936 in words is "thirty billion, five hundred seventy-eight million, two hundred seventy-five thousand, nine hundred thirty-six".
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