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28794859180 = 22510913208651
BaseRepresentation
bin11010110100010011…
…101010111010101100
32202022202121101221221
4122310103222322230
5432432440443210
621121141433124
72036364156523
oct326423527254
982282541857
1028794859180
1111236a4698a
1256b740b7a4
13293b7c0a19
14157237b4ba
15b37e251da
hex6b44eaeac

28794859180 has 24 divisors (see below), whose sum is σ = 61023972240. Its totient is φ = 11412273600.

The previous prime is 28794859151. The next prime is 28794859189. The reversal of 28794859180 is 8195849782.

It is not an unprimeable number, because it can be changed into a prime (28794859189) by changing a digit.

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, 6602146 + ... + 6606505.

It is an arithmetic number, because the mean of its divisors is an integer number (2542665510).

Almost surely, 228794859180 is an apocalyptic number.

28794859180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28794859180 is an abundant number, since it is smaller than the sum of its proper divisors (32229113060).

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

28794859180 is a wasteful number, since it uses less digits than its factorization.

28794859180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13208769 (or 13208767 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 61.

The spelling of 28794859180 in words is "twenty-eight billion, seven hundred ninety-four million, eight hundred fifty-nine thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 2180 13208651 26417302 52834604 66043255 132086510 264173020 1439742959 2879485918 5758971836 7198714795 14397429590 28794859180