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28008588075 = 35213143919963
BaseRepresentation
bin11010000101011100…
…010010001100101011
32200021222002200202220
4122011130102030223
5424330144304300
620511133125123
72011036033116
oct320534221453
980258080686
1028008588075
1110973132856
1255180297a3
132844936a50
1414d9b8757d
15adddb0da0
hex68571232b

28008588075 has 48 divisors (see below), whose sum is σ = 49906805760. Its totient is φ = 13778570880.

The previous prime is 28008588073. The next prime is 28008588089. The reversal of 28008588075 is 57088580082.

It is not a de Polignac number, because 28008588075 - 21 = 28008588073 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 1393044 + ... + 1413006.

It is an arithmetic number, because the mean of its divisors is an integer number (1039725120).

Almost surely, 228008588075 is an apocalyptic number.

28008588075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28008588075 is a deficient number, since it is larger than the sum of its proper divisors (21898217685).

28008588075 is a wasteful number, since it uses less digits than its factorization.

28008588075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21428 (or 21423 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 51.

The spelling of 28008588075 in words is "twenty-eight billion, eight million, five hundred eighty-eight thousand, seventy-five".

Divisors: 1 3 5 13 15 25 39 65 75 195 325 975 1439 4317 7195 18707 19963 21585 35975 56121 59889 93535 99815 107925 259519 280605 299445 467675 499075 778557 1297595 1403025 1497225 3892785 6487975 19463925 28726757 86180271 143633785 373447841 430901355 718168925 1120343523 1867239205 2154506775 5601717615 9336196025 28008588075