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307801230 = 235115915809
BaseRepresentation
bin10010010110001…
…010110010001110
3210110011220220120
4102112022302032
51112244114410
650313125410
710425160452
oct2226126216
9713156816
10307801230
11148822690
12870b9866
134b9cc909
142cc44662
151c050570
hex1258ac8e

307801230 has 64 divisors (see below), whose sum is σ = 819590400. Its totient is φ = 73349120.

The previous prime is 307801223. The next prime is 307801279. The reversal of 307801230 is 32108703.

307801230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 307801230.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 11566 + ... + 27374.

It is an arithmetic number, because the mean of its divisors is an integer number (12806100).

Almost surely, 2307801230 is an apocalyptic number.

307801230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 307801230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409795200).

307801230 is an abundant number, since it is smaller than the sum of its proper divisors (511789170).

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

307801230 is a wasteful number, since it uses less digits than its factorization.

307801230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15889.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 307801230 is about 17544.2648748815. The cubic root of 307801230 is about 675.1860337714.

Adding to 307801230 its reverse (32108703), we get a palindrome (339909933).

The spelling of 307801230 in words is "three hundred seven million, eight hundred one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 59 66 110 118 165 177 295 330 354 590 649 885 1298 1770 1947 3245 3894 6490 9735 15809 19470 31618 47427 79045 94854 158090 173899 237135 347798 474270 521697 869495 932731 1043394 1738990 1865462 2608485 2798193 4663655 5216970 5596386 9327310 10260041 13990965 20520082 27981930 30780123 51300205 61560246 102600410 153900615 307801230