Base | Representation |
---|---|
bin | 11100001101011111… |
… | …101111101101101100 |
3 | 2220012001020020021001 |
4 | 130031133233231230 |
5 | 444014021244110 |
6 | 21525433250044 |
7 | 2121433632025 |
oct | 341537575554 |
9 | 86161206231 |
10 | 30291196780 |
11 | 11934655529 |
12 | 5a54563924 |
13 | 2b197ccca0 |
14 | 1674da9c4c |
15 | bc449963a |
hex | 70d7efb6c |
30291196780 has 96 divisors (see below), whose sum is σ = 70826434560. Its totient is φ = 10806531840.
The previous prime is 30291196729. The next prime is 30291196799. The reversal of 30291196780 is 8769119203.
It is a happy number.
It is a self number, because there is not a number n which added to its sum of digits gives 30291196780.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5792527 + ... + 5797753.
It is an arithmetic number, because the mean of its divisors is an integer number (737775360).
Almost surely, 230291196780 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 30291196780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35413217280).
30291196780 is an abundant number, since it is smaller than the sum of its proper divisors (40535237780).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30291196780 is a wasteful number, since it uses less digits than its factorization.
30291196780 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5999 (or 5997 counting only the distinct ones).
The product of its (nonzero) digits is 163296, while the sum is 46.
The spelling of 30291196780 in words is "thirty billion, two hundred ninety-one million, one hundred ninety-six thousand, seven hundred eighty".
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