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51307428360 = 23351462129243
BaseRepresentation
bin101111110010001010…
…010011101000001000
311220102200222102011110
4233302022103220020
51320034200201420
635323104130320
73464305642146
oct576212235010
9156380872143
1051307428360
111a839784361
129b3a9069a0
134ab88a8b86
1426aa226596
151504550ee0
hexbf2293a08

51307428360 has 64 divisors (see below), whose sum is σ = 153938076480. Its totient is φ = 13680577280.

The previous prime is 51307428329. The next prime is 51307428379. The reversal of 51307428360 is 6382470315.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1739899 + ... + 1769141.

It is an arithmetic number, because the mean of its divisors is an integer number (2405282445).

Almost surely, 251307428360 is an apocalyptic number.

It is an amenable number.

51307428360 is an abundant number, since it is smaller than the sum of its proper divisors (102630648120).

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

51307428360 is a wasteful number, since it uses less digits than its factorization.

51307428360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43878 (or 43874 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

Adding to 51307428360 its reverse (6382470315), we get a palindrome (57689898675).

The spelling of 51307428360 in words is "fifty-one billion, three hundred seven million, four hundred twenty-eight thousand, three hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 14621 29242 29243 43863 58484 58486 73105 87726 87729 116968 116972 146210 146215 175452 175458 219315 233944 292420 292430 350904 350916 438630 438645 584840 584860 701832 877260 877290 1169720 1754520 1754580 3509160 427561903 855123806 1282685709 1710247612 2137809515 2565371418 3420495224 4275619030 5130742836 6413428545 8551238060 10261485672 12826857090 17102476120 25653714180 51307428360