Base | Representation |
---|---|
bin | 1001001111111… |
… | …0010100000111 |
3 | 2200222202102202 |
4 | 2103332110013 |
5 | 34412243112 |
6 | 3503225115 |
7 | 650466365 |
oct | 223762407 |
9 | 80882382 |
10 | 38790407 |
11 | 1a994897 |
12 | 10ba819b |
13 | 8062106 |
14 | 521a635 |
15 | 36136c2 |
hex | 24fe507 |
38790407 has 2 divisors, whose sum is σ = 38790408. Its totient is φ = 38790406.
The previous prime is 38790377. The next prime is 38790439. The reversal of 38790407 is 70409783.
It is a weak prime.
It is an emirp because it is prime and its reverse (70409783) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 38790407 - 210 = 38789383 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (38790497) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19395203 + 19395204.
It is an arithmetic number, because the mean of its divisors is an integer number (19395204).
Almost surely, 238790407 is an apocalyptic number.
38790407 is a deficient number, since it is larger than the sum of its proper divisors (1).
38790407 is an equidigital number, since it uses as much as digits as its factorization.
38790407 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 42336, while the sum is 38.
The square root of 38790407 is about 6228.1945216893. The cubic root of 38790407 is about 338.5125534713.
The spelling of 38790407 in words is "thirty-eight million, seven hundred ninety thousand, four hundred seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.099 sec. • engine limits •