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28005027835 = 529241801403
BaseRepresentation
bin11010000101001110…
…101100111111111011
32200021201101211001011
4122011032230333323
5424323241342320
620510524534351
72010663544321
oct320516547773
980251354034
1028005027835
1110971120a04
1255169b13b7
132843c8b3b5
1414d94dbd11
15add90b05a
hex6853acffb

28005027835 has 16 divisors (see below), whose sum is σ = 34909158240. Its totient is φ = 21541685760.

The previous prime is 28005027833. The next prime is 28005027839. The reversal of 28005027835 is 53872050082.

It is not a de Polignac number, because 28005027835 - 21 = 28005027833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28005027833) 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, 365757 + ... + 435646.

It is an arithmetic number, because the mean of its divisors is an integer number (2181822390).

Almost surely, 228005027835 is an apocalyptic number.

28005027835 is a deficient number, since it is larger than the sum of its proper divisors (6904130405).

28005027835 is a wasteful number, since it uses less digits than its factorization.

28005027835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801678.

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 28005027835 in words is "twenty-eight billion, five million, twenty-seven thousand, eight hundred thirty-five".

Divisors: 1 5 29 145 241 1205 6989 34945 801403 4007015 23240687 116203435 193138123 965690615 5601005567 28005027835