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304930470 = 235131037591
BaseRepresentation
bin10010001011001…
…101111010100110
3210020210001222010
4102023031322212
51111030233340
650131415050
710361603055
oct2213157246
9706701863
10304930470
11147141859
1286154486
134b236040
142c6d839c
151bb84b80
hex122cdea6

304930470 has 64 divisors (see below), whose sum is σ = 795884544. Its totient is φ = 74321280.

The previous prime is 304930469. The next prime is 304930471. The reversal of 304930470 is 74039403.

It is an interprime number because it is at equal distance from previous prime (304930469) and next prime (304930471).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304930471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36375 + ... + 43965.

It is an arithmetic number, because the mean of its divisors is an integer number (12435696).

Almost surely, 2304930470 is an apocalyptic number.

304930470 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 304930470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397942272).

304930470 is an abundant number, since it is smaller than the sum of its proper divisors (490954074).

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

304930470 is a wasteful number, since it uses less digits than its factorization.

304930470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 304930470 is about 17462.2584450007. The cubic root of 304930470 is about 673.0803951980.

Adding to 304930470 its reverse (74039403), we get a palindrome (378969873).

The spelling of 304930470 in words is "three hundred four million, nine hundred thirty thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 103 130 195 206 309 390 515 618 1030 1339 1545 2678 3090 4017 6695 7591 8034 13390 15182 20085 22773 37955 40170 45546 75910 98683 113865 197366 227730 296049 493415 592098 781873 986830 1480245 1563746 2345619 2960490 3909365 4691238 7818730 10164349 11728095 20328698 23456190 30493047 50821745 60986094 101643490 152465235 304930470