Search a number
-
+
30930195 = 3519412647
BaseRepresentation
bin111010111111…
…1010100010011
32011012102020210
41311333110103
530404231240
63022535203
7523621332
oct165772423
964172223
1030930195
111650634a
12a437503
13653c4ba
144171d19
152aae780
hex1d7f513

30930195 has 32 divisors (see below), whose sum is σ = 53383680. Its totient is φ = 15240960.

The previous prime is 30930143. The next prime is 30930203. The reversal of 30930195 is 59103903.

It is not a de Polignac number, because 30930195 - 26 = 30930131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10362 + ... + 13008.

It is an arithmetic number, because the mean of its divisors is an integer number (1668240).

Almost surely, 230930195 is an apocalyptic number.

30930195 is a deficient number, since it is larger than the sum of its proper divisors (22453485).

30930195 is a wasteful number, since it uses less digits than its factorization.

30930195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 30930195 is about 5561.4921558877. The cubic root of 30930195 is about 313.9020987065.

It can be divided in two parts, 30930 and 195, that added together give a triangular number (31125 = T249).

The spelling of 30930195 in words is "thirty million, nine hundred thirty thousand, one hundred ninety-five".

Divisors: 1 3 5 15 19 41 57 95 123 205 285 615 779 2337 2647 3895 7941 11685 13235 39705 50293 108527 150879 251465 325581 542635 754395 1627905 2062013 6186039 10310065 30930195