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28008050550 = 2352953195929
BaseRepresentation
bin11010000101011010…
…001110111101110110
32200021221002101102120
4122011122032331312
5424330030104200
620511113420410
72011031334024
oct320532167566
980257071376
1028008050550
11109728a5a17
125517a0a706
1328447a919c
1414d9a87714
15addd069a0
hex68568ef76

28008050550 has 48 divisors (see below), whose sum is σ = 69533205840. Its totient is φ = 7460938240.

The previous prime is 28008050549. The next prime is 28008050561. The reversal of 28008050550 is 5505080082.

It is a super-2 number, since 2×280080505502 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44986 + ... + 240914.

It is an arithmetic number, because the mean of its divisors is an integer number (1448608455).

Almost surely, 228008050550 is an apocalyptic number.

28008050550 is an abundant number, since it is smaller than the sum of its proper divisors (41525155290).

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

28008050550 is a wasteful number, since it uses less digits than its factorization.

28008050550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196897 (or 196892 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 33.

The spelling of 28008050550 in words is "twenty-eight billion, eight million, fifty thousand, five hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 150 953 1906 2859 4765 5718 9530 14295 23825 28590 47650 71475 142950 195929 391858 587787 979645 1175574 1959290 2938935 4898225 5877870 9796450 14694675 29389350 186720337 373440674 560161011 933601685 1120322022 1867203370 2800805055 4668008425 5601610110 9336016850 14004025275 28008050550