Base | Representation |
---|---|
bin | 10001111110010111… |
… | …110001011100001100 |
3 | 1211211001102010020002 |
4 | 101332113301130030 |
5 | 304011301431340 |
6 | 12511042343432 |
7 | 1252162356452 |
oct | 217627613414 |
9 | 54731363202 |
10 | 19300030220 |
11 | 82044003a9 |
12 | 38a765ab78 |
13 | 1a87679233 |
14 | d113589d2 |
15 | 77e5a2715 |
hex | 47e5f170c |
19300030220 has 48 divisors (see below), whose sum is σ = 42367180800. Its totient is φ = 7376391360.
The previous prime is 19300030219. The next prime is 19300030223. The reversal of 19300030220 is 2203000391.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a junction number, because it is equal to n+sod(n) for n = 19300030192 and 19300030201.
It is not an unprimeable number, because it can be changed into a prime (19300030223) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148040 + ... + 245999.
It is an arithmetic number, because the mean of its divisors is an integer number (882649600).
Almost surely, 219300030220 is an apocalyptic number.
19300030220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
19300030220 is an abundant number, since it is smaller than the sum of its proper divisors (23067150580).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19300030220 is a wasteful number, since it uses less digits than its factorization.
19300030220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 394158 (or 394156 counting only the distinct ones).
The product of its (nonzero) digits is 324, while the sum is 20.
The spelling of 19300030220 in words is "nineteen billion, three hundred million, thirty thousand, two hundred twenty".
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