Base | Representation |
---|---|
bin | 11100101011011010… |
… | …000101110101000100 |
3 | 2221111000112001100220 |
4 | 130223122011311010 |
5 | 1001031003442410 |
6 | 22051321304340 |
7 | 2140036305345 |
oct | 345332056504 |
9 | 87430461326 |
10 | 30793030980 |
11 | 12071954a38 |
12 | 5b746350b0 |
13 | 2b99777bba |
14 | 16c18bc0cc |
15 | c03576070 |
hex | 72b685d44 |
30793030980 has 48 divisors (see below), whose sum is σ = 89001798144. Its totient is φ = 7946588160.
The previous prime is 30793030967. The next prime is 30793031023. The reversal of 30793030980 is 8903039703.
It is a happy number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8275837 + ... + 8279556.
It is an arithmetic number, because the mean of its divisors is an integer number (1854204128).
Almost surely, 230793030980 is an apocalyptic number.
30793030980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
30793030980 is an abundant number, since it is smaller than the sum of its proper divisors (58208767164).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30793030980 is a wasteful number, since it uses less digits than its factorization.
30793030980 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16555436 (or 16555434 counting only the distinct ones).
The product of its (nonzero) digits is 122472, while the sum is 42.
The spelling of 30793030980 in words is "thirty billion, seven hundred ninety-three million, thirty thousand, nine hundred eighty".
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