Search a number
-
+
28250670741 = 371831597979
BaseRepresentation
bin11010010011110111…
…110000011010010101
32200220211121202202120
4122103313300122111
5430324132430431
620551141530153
72020035511356
oct322367603225
980824552676
1028250670741
1110a87849077
125585113959
132882b36827
14151dda1d2d
15b0527e196
hex693df0695

28250670741 has 16 divisors (see below), whose sum is σ = 38658332160. Its totient is φ = 18344787440.

The previous prime is 28250670727. The next prime is 28250670757. The reversal of 28250670741 is 14707605282.

It is a cyclic number.

It is not a de Polignac number, because 28250670741 - 214 = 28250654357 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28250670693 and 28250670702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28250670241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781311 + ... + 816668.

It is an arithmetic number, because the mean of its divisors is an integer number (2416145760).

Almost surely, 228250670741 is an apocalyptic number.

It is an amenable number.

28250670741 is a deficient number, since it is larger than the sum of its proper divisors (10407661419).

28250670741 is a wasteful number, since it uses less digits than its factorization.

28250670741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598136.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 28250670741 in words is "twenty-eight billion, two hundred fifty million, six hundred seventy thousand, seven hundred forty-one".

Divisors: 1 3 71 83 213 249 5893 17679 1597979 4793937 113456509 132632257 340369527 397896771 9416890247 28250670741