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28788316130 = 257411261659
BaseRepresentation
bin11010110011111010…
…101101011111100010
32202022022021222120202
4122303322231133202
5432424302104010
621120345305202
72036254435550
oct326372553742
982268258522
1028788316130
1111233288002
1256b5195202
13293a33c7b2
141571556bd0
15b375816a5
hex6b3ead7e2

28788316130 has 16 divisors (see below), whose sum is σ = 59221679040. Its totient is φ = 9870279792.

The previous prime is 28788316121. The next prime is 28788316201. The reversal of 28788316130 is 3161388782.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205630760 + ... + 205630899.

It is an arithmetic number, because the mean of its divisors is an integer number (3701354940).

Almost surely, 228788316130 is an apocalyptic number.

28788316130 is an abundant number, since it is smaller than the sum of its proper divisors (30433362910).

28788316130 is a wasteful number, since it uses less digits than its factorization.

28788316130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411261673.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 28788316130 in words is "twenty-eight billion, seven hundred eighty-eight million, three hundred sixteen thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 411261659 822523318 2056308295 2878831613 4112616590 5757663226 14394158065 28788316130