Base | Representation |
---|---|
bin | 11100101011110111… |
… | …111111110110000000 |
3 | 2221111120021100120000 |
4 | 130223313333312000 |
5 | 1001040010331114 |
6 | 22052201320000 |
7 | 2140163040045 |
oct | 345367776600 |
9 | 87446240500 |
10 | 30800870784 |
11 | 1207631a112 |
12 | 5b77196000 |
13 | 2b9b291438 |
14 | 16c295d1cc |
15 | c040c3e09 |
hex | 72bdffd80 |
30800870784 has 160 divisors (see below), whose sum is σ = 92216955600. Its totient is φ = 10204904448.
The previous prime is 30800870783. The next prime is 30800870813. The reversal of 30800870784 is 48707800803.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30800870783) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1722562 + ... + 1740350.
Almost surely, 230800870784 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 30800870784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46108477800).
30800870784 is an abundant number, since it is smaller than the sum of its proper divisors (61416084816).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30800870784 is a wasteful number, since it uses less digits than its factorization.
30800870784 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17982 (or 17961 counting only the distinct ones).
The product of its (nonzero) digits is 301056, while the sum is 45.
The spelling of 30800870784 in words is "thirty billion, eight hundred million, eight hundred seventy thousand, seven hundred eighty-four".
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