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28394783395 = 5114523114143
BaseRepresentation
bin11010011100011101…
…100000001010100011
32201021212210110011021
4122130131200022203
5431123031032040
621013330430311
72023435451026
oct323435401243
981255713137
1028394783395
111105112a040
125605432397
1328a6953aa4
1415351971bd
15b12c4924a
hex69c7602a3

28394783395 has 16 divisors (see below), whose sum is σ = 37179896832. Its totient is φ = 20646004960.

The previous prime is 28394783393. The next prime is 28394783399. The reversal of 28394783395 is 59338749382.

It is not a de Polignac number, because 28394783395 - 21 = 28394783393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28394783393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191694 + ... + 305836.

It is an arithmetic number, because the mean of its divisors is an integer number (2323743552).

Almost surely, 228394783395 is an apocalyptic number.

28394783395 is a deficient number, since it is larger than the sum of its proper divisors (8785113437).

28394783395 is a wasteful number, since it uses less digits than its factorization.

28394783395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118682.

The product of its digits is 39191040, while the sum is 61.

The spelling of 28394783395 in words is "twenty-eight billion, three hundred ninety-four million, seven hundred eighty-three thousand, three hundred ninety-five".

Divisors: 1 5 11 55 4523 22615 49753 114143 248765 570715 1255573 6277865 516268789 2581343945 5678956679 28394783395