Search a number
-
+
28008588074 = 219372561109
BaseRepresentation
bin11010000101011100…
…010010001100101010
32200021222002200202212
4122011130102030222
5424330144304244
620511133125122
72011036033115
oct320534221452
980258080685
1028008588074
1110973132855
1255180297a2
132844936a4c
1414d9b8757c
15adddb0d9e
hex68571232a

28008588074 has 8 divisors (see below), whose sum is σ = 42230566020. Its totient is φ = 13931732736.

The previous prime is 28008588073. The next prime is 28008588089. The reversal of 28008588074 is 47088580082.

It can be written as a sum of positive squares in 2 ways, for example, as 26931107449 + 1077480625 = 164107^2 + 32825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28008588073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36280169 + ... + 36280940.

Almost surely, 228008588074 is an apocalyptic number.

28008588074 is a deficient number, since it is larger than the sum of its proper divisors (14221977946).

28008588074 is a wasteful number, since it uses less digits than its factorization.

28008588074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72561304.

The product of its (nonzero) digits is 1146880, while the sum is 50.

The spelling of 28008588074 in words is "twenty-eight billion, eight million, five hundred eighty-eight thousand, seventy-four".

Divisors: 1 2 193 386 72561109 145122218 14004294037 28008588074