Search a number
-
+
28234848915 = 33571312718097
BaseRepresentation
bin11010010010111011…
…011001101010010011
32200212201211221022000
4122102323121222103
5430311110131130
620545414445043
72016454153530
oct322273315223
980781757260
1028234848915
1110a79921989
12557b963783
13287c7870c0
14151bc43d87
15b03ba6260
hex692ed9a93

28234848915 has 128 divisors (see below), whose sum is σ = 62268702720. Its totient is φ = 11820017664.

The previous prime is 28234848869. The next prime is 28234848919. The reversal of 28234848915 is 51984843282.

28234848915 is a `hidden beast` number, since 2 + 82 + 3 + 484 + 89 + 1 + 5 = 666.

It is not a de Polignac number, because 28234848915 - 211 = 28234846867 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28234848919) 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 127 ways as a sum of consecutive naturals, for example, 1551147 + ... + 1569243.

It is an arithmetic number, because the mean of its divisors is an integer number (486474240).

Almost surely, 228234848915 is an apocalyptic number.

28234848915 is an abundant number, since it is smaller than the sum of its proper divisors (34033853805).

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

28234848915 is a wasteful number, since it uses less digits than its factorization.

28234848915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18258 (or 18252 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 28234848915 in words is "twenty-eight billion, two hundred thirty-four million, eight hundred forty-eight thousand, nine hundred fifteen".

Divisors: 1 3 5 7 9 13 15 21 27 35 39 45 63 65 91 105 117 127 135 189 195 273 315 351 381 455 585 635 819 889 945 1143 1365 1651 1755 1905 2457 2667 3429 4095 4445 4953 5715 8001 8255 11557 12285 13335 14859 17145 18097 24003 24765 34671 40005 44577 54291 57785 74295 90485 104013 120015 126679 162873 173355 222885 235261 271455 312039 380037 488619 520065 633395 705783 814365 1140111 1176305 1560195 1646827 1900185 2117349 2298319 2443095 3420333 3528915 4940481 5700555 6352047 6894957 8234135 10586745 11491595 14821443 16088233 17101665 20684871 24702405 29878147 31760235 34474785 44464329 48264699 62054613 74107215 80441165 89634441 103424355 144794097 149390735 209147029 222321645 241323495 268903323 310273065 434382291 448172205 627441087 723970485 806709969 1045735145 1344516615 1882323261 2171911455 3137205435 4033549845 5646969783 9411616305 28234848915