Base | Representation |
---|---|
bin | 11011111101111101… |
… | …011000011011101000 |
3 | 2212111212202000001020 |
4 | 123331331120123220 |
5 | 443000303432110 |
6 | 21443522252440 |
7 | 2112120203262 |
oct | 337575303350 |
9 | 85455660036 |
10 | 30030530280 |
11 | 118104a6973 |
12 | 59a11b7120 |
13 | 2aa77c455a |
14 | 164c514b32 |
15 | bab659d70 |
hex | 6fdf586e8 |
30030530280 has 64 divisors (see below), whose sum is σ = 90548979840. Its totient is φ = 7967484672.
The previous prime is 30030530279. The next prime is 30030530281. The reversal of 30030530280 is 8203503003.
It is an interprime number because it is at equal distance from previous prime (30030530279) and next prime (30030530281).
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a self number, because there is not a number n which added to its sum of digits gives 30030530280.
It is not an unprimeable number, because it can be changed into a prime (30030530281) 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, 611524 + ... + 658803.
It is an arithmetic number, because the mean of its divisors is an integer number (1414827810).
Almost surely, 230030530280 is an apocalyptic number.
30030530280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
30030530280 is an abundant number, since it is smaller than the sum of its proper divisors (60518449560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30030530280 is a wasteful number, since it uses less digits than its factorization.
30030530280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1270538 (or 1270534 counting only the distinct ones).
The product of its (nonzero) digits is 2160, while the sum is 24.
The spelling of 30030530280 in words is "thirty billion, thirty million, five hundred thirty thousand, two hundred eighty".
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