Base | Representation |
---|---|
bin | 11100001011000010… |
… | …100101111011010000 |
3 | 2220002011201020000100 |
4 | 130023002211323100 |
5 | 443423000000310 |
6 | 21521402252400 |
7 | 2120423521026 |
oct | 341302457320 |
9 | 86064636010 |
10 | 30250000080 |
11 | 11913377873 |
12 | 5a427b7100 |
13 | 2b11107841 |
14 | 166d724716 |
15 | bc0a5cec0 |
hex | 70b0a5ed0 |
30250000080 has 120 divisors (see below), whose sum is σ = 104067479880. Its totient is φ = 7869911040.
The previous prime is 30250000037. The next prime is 30250000091. The reversal of 30250000080 is 8000005203.
It can be written as a sum of positive squares in 4 ways, for example, as 165791376 + 30084208704 = 12876^2 + 173448^2 .
It is a tau number, because it is divible by the number of its divisors (120).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 482845 + ... + 541884.
It is an arithmetic number, because the mean of its divisors is an integer number (867228999).
Almost surely, 230250000080 is an apocalyptic number.
30250000080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
30250000080 is an abundant number, since it is smaller than the sum of its proper divisors (73817479800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30250000080 is a wasteful number, since it uses less digits than its factorization.
30250000080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1024789 (or 1024780 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 18.
Adding to 30250000080 its reverse (8000005203), we get a palindrome (38250005283).
The spelling of 30250000080 in words is "thirty billion, two hundred fifty million, eighty", and thus it is an aban number.
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