Base | Representation |
---|---|
bin | 100101001011… |
… | …0100100111001 |
3 | 1100200020210200 |
4 | 1022112210321 |
5 | 14442204004 |
6 | 1533432413 |
7 | 324446310 |
oct | 112264471 |
9 | 40606720 |
10 | 19491129 |
11 | 10002a79 |
12 | 663b709 |
13 | 4065918 |
14 | 2835277 |
15 | 1aa0239 |
hex | 1296939 |
19491129 has 24 divisors (see below), whose sum is σ = 34070400. Its totient is φ = 10482048.
The previous prime is 19491107. The next prime is 19491151. The reversal of 19491129 is 92119491.
It is an interprime number because it is at equal distance from previous prime (19491107) and next prime (19491151).
It is not a de Polignac number, because 19491129 - 27 = 19491001 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 19491093 and 19491102.
It is not an unprimeable number, because it can be changed into a prime (19492129) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8029 + ... + 10170.
It is an arithmetic number, because the mean of its divisors is an integer number (1419600).
Almost surely, 219491129 is an apocalyptic number.
It is an amenable number.
19491129 is a deficient number, since it is larger than the sum of its proper divisors (14579271).
19491129 is a wasteful number, since it uses less digits than its factorization.
19491129 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18229 (or 18226 counting only the distinct ones).
The product of its digits is 5832, while the sum is 36.
The square root of 19491129 is about 4414.8758759449. The cubic root of 19491129 is about 269.1198086194.
The spelling of 19491129 in words is "nineteen million, four hundred ninety-one thousand, one hundred twenty-nine".
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