Search a number
-
+
28283119 is a prime number
BaseRepresentation
bin110101111100…
…1000011101111
31222012221010221
41223321003233
524220024434
62450112211
7462255034
oct153710357
958187127
1028283119
1114a68587
12957b667
135b23697
143a8338b
15273a2b4
hex1af90ef

28283119 has 2 divisors, whose sum is σ = 28283120. Its totient is φ = 28283118.

The previous prime is 28283117. The next prime is 28283137. The reversal of 28283119 is 91138282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28283119 - 21 = 28283117 is a prime.

It is a super-2 number, since 2×282831192 = 1599869640736322, which contains 22 as substring.

Together with 28283117, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28283113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14141559 + 14141560.

It is an arithmetic number, because the mean of its divisors is an integer number (14141560).

Almost surely, 228283119 is an apocalyptic number.

28283119 is a deficient number, since it is larger than the sum of its proper divisors (1).

28283119 is an equidigital number, since it uses as much as digits as its factorization.

28283119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 28283119 is about 5318.1875672075. The cubic root of 28283119 is about 304.6789383297.

The spelling of 28283119 in words is "twenty-eight million, two hundred eighty-three thousand, one hundred nineteen".