Base | Representation |
---|---|
bin | 111110101000… |
… | …111110000011 |
3 | 1010220021000112 |
4 | 332220332003 |
5 | 13200430424 |
6 | 1343541535 |
7 | 256400606 |
oct | 76507603 |
9 | 33807015 |
10 | 16420739 |
11 | 92a6165 |
12 | 55ba8ab |
13 | 352c21a |
14 | 227633d |
15 | 169560e |
hex | fa8f83 |
16420739 has 2 divisors, whose sum is σ = 16420740. Its totient is φ = 16420738.
The previous prime is 16420721. The next prime is 16420751. The reversal of 16420739 is 93702461.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 16420739 - 212 = 16416643 is a prime.
It is a super-2 number, since 2×164207392 = 539281338612242, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (16420709) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8210369 + 8210370.
It is an arithmetic number, because the mean of its divisors is an integer number (8210370).
Almost surely, 216420739 is an apocalyptic number.
16420739 is a deficient number, since it is larger than the sum of its proper divisors (1).
16420739 is an equidigital number, since it uses as much as digits as its factorization.
16420739 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 9072, while the sum is 32.
The square root of 16420739 is about 4052.2511027823. The cubic root of 16420739 is about 254.1738688037.
The spelling of 16420739 in words is "sixteen million, four hundred twenty thousand, seven hundred thirty-nine".
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