Search a number
-
+
868505868 = 223310179621
BaseRepresentation
bin110011110001000…
…101100100001100
32020112020200002000
4303301011210030
53234314141433
6222103032300
730344115036
oct6361054414
92215220060
10868505868
1140628134a
12202a3b690
1310ac1a5c9
14834bcc56
15513aa113
hex33c4590c

868505868 has 48 divisors (see below), whose sum is σ = 2274004320. Its totient is φ = 286632000.

The previous prime is 868505851. The next prime is 868505879.

868505868 is a `hidden beast` number, since 8 + 6 + 8 + 50 + 586 + 8 = 666.

868505868 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 28903 + ... + 50718.

It is an arithmetic number, because the mean of its divisors is an integer number (47375090).

Almost surely, 2868505868 is an apocalyptic number.

It is an amenable number.

868505868 is an abundant number, since it is smaller than the sum of its proper divisors (1405498452).

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

868505868 is a wasteful number, since it uses less digits than its factorization.

868505868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79735 (or 79727 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 54.

The square root of 868505868 is about 29470.4236141933. The cubic root of 868505868 is about 954.0934602476.

The spelling of 868505868 in words is "eight hundred sixty-eight million, five hundred five thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 101 108 202 303 404 606 909 1212 1818 2727 3636 5454 10908 79621 159242 238863 318484 477726 716589 955452 1433178 2149767 2866356 4299534 8041721 8599068 16083442 24125163 32166884 48250326 72375489 96500652 144750978 217126467 289501956 434252934 868505868