Base | Representation |
---|---|
bin | 100100001011… |
… | …1011100101010 |
3 | 1022200210111210 |
4 | 1020113130222 |
5 | 14324023120 |
6 | 1514333550 |
7 | 320150214 |
oct | 110273452 |
9 | 38623453 |
10 | 18970410 |
11 | a787828 |
12 | 642a2b6 |
13 | 3c128c4 |
14 | 273b5b4 |
15 | 19eace0 |
hex | 121772a |
18970410 has 16 divisors (see below), whose sum is σ = 45529056. Its totient is φ = 5058768.
The previous prime is 18970361. The next prime is 18970411. The reversal of 18970410 is 1407981.
It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 632347 = 18970410 / (1 + 8 + 9 + 7 + 0 + 4 + 1 + 0).
It is not an unprimeable number, because it can be changed into a prime (18970411) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316144 + ... + 316203.
It is an arithmetic number, because the mean of its divisors is an integer number (2845566).
Almost surely, 218970410 is an apocalyptic number.
18970410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
18970410 is an abundant number, since it is smaller than the sum of its proper divisors (26558646).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18970410 is a wasteful number, since it uses less digits than its factorization.
18970410 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 632357.
The product of its (nonzero) digits is 2016, while the sum is 30.
The square root of 18970410 is about 4355.5034152208. The cubic root of 18970410 is about 266.7015700841.
The spelling of 18970410 in words is "eighteen million, nine hundred seventy thousand, four hundred ten".
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