Search a number
-
+
305035130830 = 251719313046391
BaseRepresentation
bin1000111000001011000…
…00101011011111001110
31002011100102102011202011
410130011200223133032
514444202443141310
6352044201251434
731016024555143
oct4340540533716
91064312364664
10305035130830
11108401419651
124b14b793b7a
13229c303a971
1410a99b4a3ca
157e0475478a
hex470582b7ce

305035130830 has 64 divisors (see below), whose sum is σ = 631699845120. Its totient is φ = 105283238400.

The previous prime is 305035130809. The next prime is 305035130833. The reversal of 305035130830 is 38031530503.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 305035130792 and 305035130801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305035130833) 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 31 ways as a sum of consecutive naturals, for example, 1423066 + ... + 1623325.

It is an arithmetic number, because the mean of its divisors is an integer number (9870310080).

Almost surely, 2305035130830 is an apocalyptic number.

305035130830 is an abundant number, since it is smaller than the sum of its proper divisors (326664714290).

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

305035130830 is a wasteful number, since it uses less digits than its factorization.

305035130830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046465.

The product of its (nonzero) digits is 16200, while the sum is 31.

The spelling of 305035130830 in words is "three hundred five billion, thirty-five million, one hundred thirty thousand, eight hundred thirty".

Divisors: 1 2 5 10 17 19 31 34 38 62 85 95 155 170 190 310 323 527 589 646 1054 1178 1615 2635 2945 3230 5270 5890 10013 20026 50065 100130 3046391 6092782 15231955 30463910 51788647 57881429 94438121 103577294 115762858 188876242 258943235 289407145 472190605 517886470 578814290 944381210 983984293 1605448057 1794324299 1967968586 3210896114 3588648598 4919921465 8027240285 8971621495 9839842930 16054480570 17943242990 30503513083 61007026166 152517565415 305035130830