Base | Representation |
---|---|
bin | 11100101011111101… |
… | …110001010000000000 |
3 | 2221111200010020010022 |
4 | 130223331301100000 |
5 | 1001040402240442 |
6 | 22052253553012 |
7 | 2140211641301 |
oct | 345375612000 |
9 | 87450106108 |
10 | 30802383872 |
11 | 120771629a7 |
12 | 5b777a5768 |
13 | 2b9b6a1060 |
14 | 16c2c347a8 |
15 | c042c23d2 |
hex | 72bf71400 |
30802383872 has 176 divisors, whose sum is σ = 69601111440. Its totient is φ = 13525843968.
The previous prime is 30802383823. The next prime is 30802383917. The reversal of 30802383872 is 27838320803.
It can be written as a sum of positive squares in 8 ways, for example, as 1019908096 + 29782475776 = 31936^2 + 172576^2 .
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28180958 + ... + 28182050.
Almost surely, 230802383872 is an apocalyptic number.
30802383872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30802383872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34800555720).
30802383872 is an abundant number, since it is smaller than the sum of its proper divisors (38798727568).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30802383872 is a wasteful number, since it uses less digits than its factorization.
30802383872 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1228 (or 1210 counting only the distinct ones).
The product of its (nonzero) digits is 387072, while the sum is 44.
The spelling of 30802383872 in words is "thirty billion, eight hundred two million, three hundred eighty-three thousand, eight hundred seventy-two".
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