Search a number
-
+
285930507349 = 1953683415729
BaseRepresentation
bin1000010100100101100…
…10010100110001010101
31000100000222200202011201
410022102302110301111
514141041202213344
6335204335032501
726441424132334
oct4122262246125
91010028622151
10285930507349
11100298354223
12474b966b731
1320c69ccb126
14dba6739d1b
1576874004d4
hex4292c94c55

285930507349 has 16 divisors (see below), whose sum is σ = 307108065600. Its totient is φ = 265380800256.

The previous prime is 285930507287. The next prime is 285930507361. The reversal of 285930507349 is 943705039582.

It is a cyclic number.

It is not a de Polignac number, because 285930507349 - 213 = 285930499157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285930507349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285930507649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479917 + ... + 895645.

It is an arithmetic number, because the mean of its divisors is an integer number (19194254100).

Almost surely, 2285930507349 is an apocalyptic number.

It is an amenable number.

285930507349 is a deficient number, since it is larger than the sum of its proper divisors (21177558251).

285930507349 is a wasteful number, since it uses less digits than its factorization.

285930507349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416484.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 285930507349 in words is "two hundred eighty-five billion, nine hundred thirty million, five hundred seven thousand, three hundred forty-nine".

Divisors: 1 19 53 683 1007 12977 36199 415729 687781 7898851 22033637 283942907 418639103 5394915233 15048974071 285930507349