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28078747360 = 255279762743
BaseRepresentation
bin11010001001100111…
…111010111011100000
32200110212010011012221
4122021213322323200
5430001124403420
620522121000424
72012550262126
oct321147727340
980425104187
1028078747360
11109a97a2534
125537623114
13285632cc11
14150520b916
15ae511dcaa
hex6899faee0

28078747360 has 48 divisors (see below), whose sum is σ = 66360815136. Its totient is φ = 11227304448.

The previous prime is 28078747351. The next prime is 28078747387. The reversal of 28078747360 is 6374787082.

It is a junction number, because it is equal to n+sod(n) for n = 28078747298 and 28078747307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416149 + ... + 478891.

It is an arithmetic number, because the mean of its divisors is an integer number (1382516982).

Almost surely, 228078747360 is an apocalyptic number.

28078747360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28078747360 is an abundant number, since it is smaller than the sum of its proper divisors (38282067776).

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

28078747360 is a wasteful number, since it uses less digits than its factorization.

28078747360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65555 (or 65547 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 28078747360 in words is "twenty-eight billion, seventy-eight million, seven hundred forty-seven thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 2797 5594 11188 13985 22376 27970 44752 55940 62743 89504 111880 125486 223760 250972 313715 447520 501944 627430 1003888 1254860 2007776 2509720 5019440 10038880 175492171 350984342 701968684 877460855 1403937368 1754921710 2807874736 3509843420 5615749472 7019686840 14039373680 28078747360