Base | Representation |
---|---|
bin | 11100110010010001… |
… | …101101011111111101 |
3 | 2221210001101001000021 |
4 | 130302101231133331 |
5 | 1001300004242220 |
6 | 22110555332141 |
7 | 2142636000001 |
oct | 346221553775 |
9 | 87701331007 |
10 | 30908274685 |
11 | 12120a08272 |
12 | 5ba7151051 |
13 | 2bb75c7c42 |
14 | 16d2d1a701 |
15 | c0d73c4aa |
hex | 73246d7fd |
30908274685 has 12 divisors (see below), whose sum is σ = 39273749748. Its totient is φ = 23270892288.
The previous prime is 30908274673. The next prime is 30908274697. The reversal of 30908274685 is 58647280903.
It is an interprime number because it is at equal distance from previous prime (30908274673) and next prime (30908274697).
It can be written as a sum of positive squares in 6 ways, for example, as 15588271609 + 15320003076 = 124853^2 + 123774^2 .
It is not a de Polignac number, because 30908274685 - 25 = 30908274653 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1611331 + ... + 1630399.
It is an arithmetic number, because the mean of its divisors is an integer number (3272812479).
Almost surely, 230908274685 is an apocalyptic number.
It is an amenable number.
30908274685 is a deficient number, since it is larger than the sum of its proper divisors (8365475063).
30908274685 is an frugal number, since it uses more digits than its factorization.
30908274685 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 38160 (or 19091 counting only the distinct ones).
The product of its (nonzero) digits is 2903040, while the sum is 52.
The spelling of 30908274685 in words is "thirty billion, nine hundred eight million, two hundred seventy-four thousand, six hundred eighty-five".
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