Base | Representation |
---|---|
bin | 100100010111… |
… | …1110011111101 |
3 | 1022212212101220 |
4 | 1020233303331 |
5 | 14340221310 |
6 | 1520423553 |
7 | 321044160 |
oct | 110576375 |
9 | 38785356 |
10 | 19070205 |
11 | a845800 |
12 | 6477bb9 |
13 | 3c4915b |
14 | 2765ad7 |
15 | 1a1a670 |
hex | 122fcfd |
19070205 has 96 divisors (see below), whose sum is σ = 40857600. Its totient is φ = 7413120.
The previous prime is 19070189. The next prime is 19070221. The reversal of 19070205 is 50207091.
It is an interprime number because it is at equal distance from previous prime (19070189) and next prime (19070221).
It is not a de Polignac number, because 19070205 - 24 = 19070189 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 241356 + ... + 241434.
It is an arithmetic number, because the mean of its divisors is an integer number (425600).
Almost surely, 219070205 is an apocalyptic number.
19070205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
19070205 is an abundant number, since it is smaller than the sum of its proper divisors (21787395).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19070205 is a wasteful number, since it uses less digits than its factorization.
19070205 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 135 (or 124 counting only the distinct ones).
The product of its (nonzero) digits is 630, while the sum is 24.
The square root of 19070205 is about 4366.9445840313. The cubic root of 19070205 is about 267.1684190402.
Adding to 19070205 its reverse (50207091), we get a palindrome (69277296).
The spelling of 19070205 in words is "nineteen million, seventy thousand, two hundred five".
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