Base | Representation |
---|---|
bin | 11100001011001000… |
… | …010001010000011000 |
3 | 2220002021111211102212 |
4 | 130023020101100120 |
5 | 443423340111110 |
6 | 21521454214252 |
7 | 2120442256556 |
oct | 341310212030 |
9 | 86067454385 |
10 | 30251488280 |
11 | 119141a3992 |
12 | 5a431b4388 |
13 | 2b11509030 |
14 | 166d9d0bd6 |
15 | bc0c53e05 |
hex | 70b211418 |
30251488280 has 64 divisors (see below), whose sum is σ = 73323835200. Its totient is φ = 11166405120.
The previous prime is 30251488279. The next prime is 30251488283. The reversal of 30251488280 is 8288415203.
It is a hoax number, since the sum of its digits (41) 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 (30251488283) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2292341 + ... + 2305499.
It is an arithmetic number, because the mean of its divisors is an integer number (1145684925).
Almost surely, 230251488280 is an apocalyptic number.
It is an amenable number.
30251488280 is an abundant number, since it is smaller than the sum of its proper divisors (43072346920).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30251488280 is a wasteful number, since it uses less digits than its factorization.
30251488280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17604 (or 17600 counting only the distinct ones).
The product of its (nonzero) digits is 122880, while the sum is 41.
The spelling of 30251488280 in words is "thirty billion, two hundred fifty-one million, four hundred eighty-eight thousand, two hundred eighty".
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