Search a number
-
+
305008956 = 223371033917
BaseRepresentation
bin10010001011100…
…001000100111100
3210020221001122000
4102023201010330
51111040241311
650133222300
710362350640
oct2213410474
9706831560
10305008956
1114719581a
1286191990
134b262995
142c718c20
151bb9d056
hex122e113c

305008956 has 96 divisors (see below), whose sum is σ = 912737280. Its totient is φ = 86277312.

The previous prime is 305008909. The next prime is 305008987. The reversal of 305008956 is 659800503.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 305008956.

It is a congruent number.

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, 75910 + ... + 79826.

It is an arithmetic number, because the mean of its divisors is an integer number (9507680).

Almost surely, 2305008956 is an apocalyptic number.

305008956 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305008956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456368640).

305008956 is an abundant number, since it is smaller than the sum of its proper divisors (607728324).

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

305008956 is a wasteful number, since it uses less digits than its factorization.

305008956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040 (or 4032 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 305008956 is about 17464.5056042248. The cubic root of 305008956 is about 673.1381382589.

The spelling of 305008956 in words is "three hundred five million, eight thousand, nine hundred fifty-six".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 84 103 108 126 189 206 252 309 378 412 618 721 756 927 1236 1442 1854 2163 2781 2884 3708 3917 4326 5562 6489 7834 8652 11124 11751 12978 15668 19467 23502 25956 27419 35253 38934 47004 54838 70506 77868 82257 105759 109676 141012 164514 211518 246771 329028 403451 423036 493542 740313 806902 987084 1210353 1480626 1613804 2420706 2824157 2961252 3631059 4841412 5648314 7262118 8472471 10893177 11296628 14524236 16944942 21786354 25417413 33889884 43572708 50834826 76252239 101669652 152504478 305008956