Search a number
-
+
30865349385 = 3251359894259
BaseRepresentation
bin11100101111101101…
…111101101100001001
32221200001121012120100
4130233231331230021
51001203012140020
622102423320013
72141605066233
oct345755755411
987601535510
1030865349385
11120a9759912
125b948b0009
132bab748a60
1416cb345253
15c09aada90
hex72fb7db09

30865349385 has 48 divisors (see below), whose sum is σ = 58591915200. Its totient is φ = 14937685632.

The previous prime is 30865349371. The next prime is 30865349429. The reversal of 30865349385 is 58394356803.

It is a happy number.

It is not a de Polignac number, because 30865349385 - 26 = 30865349321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 412615 + ... + 481644.

It is an arithmetic number, because the mean of its divisors is an integer number (1220664900).

Almost surely, 230865349385 is an apocalyptic number.

It is an amenable number.

30865349385 is a deficient number, since it is larger than the sum of its proper divisors (27726565815).

30865349385 is a wasteful number, since it uses less digits than its factorization.

30865349385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894342 (or 894339 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 30865349385 in words is "thirty billion, eight hundred sixty-five million, three hundred forty-nine thousand, three hundred eighty-five".

Divisors: 1 3 5 9 13 15 39 45 59 65 117 177 195 295 531 585 767 885 2301 2655 3835 6903 11505 34515 894259 2682777 4471295 8048331 11625367 13413885 34876101 40241655 52761281 58126835 104628303 158283843 174380505 263806405 474851529 523141515 685896653 791419215 2057689959 2374257645 3429483265 6173069877 10288449795 30865349385