Search a number
-
+
30160220 = 22519139571
BaseRepresentation
bin111001100001…
…1010101011100
32002202022001012
41303003111130
530210111340
62554234352
7514233446
oct163032534
962668035
1030160220
111602a902
12a1259b8
13632cbac
144011496
1529ab565
hex1cc355c

30160220 has 48 divisors (see below), whose sum is σ = 67267200. Its totient is φ = 11327040.

The previous prime is 30160189. The next prime is 30160223. The reversal of 30160220 is 2206103.

It is a junction number, because it is equal to n+sod(n) for n = 30160195 and 30160204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30160223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52535 + ... + 53105.

It is an arithmetic number, because the mean of its divisors is an integer number (1401400).

Almost surely, 230160220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30160220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33633600).

30160220 is an abundant number, since it is smaller than the sum of its proper divisors (37106980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30160220 is a wasteful number, since it uses less digits than its factorization.

30160220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30160220 is about 5491.8321168805. The cubic root of 30160220 is about 311.2754252011.

Adding to 30160220 its reverse (2206103), we get a palindrome (32366323).

The spelling of 30160220 in words is "thirty million, one hundred sixty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 139 190 278 380 556 571 695 1142 1390 2284 2641 2780 2855 5282 5710 10564 10849 11420 13205 21698 26410 43396 52820 54245 79369 108490 158738 216980 317476 396845 793690 1508011 1587380 3016022 6032044 7540055 15080110 30160220