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28109483061 = 3117971068761
BaseRepresentation
bin11010001011011101…
…001010110000110101
32200112222221200200020
4122023131022300311
5430032011424221
620525135435353
72013402443442
oct321335126065
980488850606
1028109483061
1110a15085740
125545985b59
13285c801a1a
14150932c9c9
15ae7b90ac6
hex68b74ac35

28109483061 has 16 divisors (see below), whose sum is σ = 40937859648. Its totient is φ = 17014659200.

The previous prime is 28109483057. The next prime is 28109483071. The reversal of 28109483061 is 16038490182.

It is not a de Polignac number, because 28109483061 - 22 = 28109483057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28109483071) 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, 508080 + ... + 560681.

It is an arithmetic number, because the mean of its divisors is an integer number (2558616228).

Almost surely, 228109483061 is an apocalyptic number.

It is an amenable number.

28109483061 is a deficient number, since it is larger than the sum of its proper divisors (12828376587).

28109483061 is a wasteful number, since it uses less digits than its factorization.

28109483061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069572.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 28109483061 in words is "twenty-eight billion, one hundred nine million, four hundred eighty-three thousand, sixty-one".

Divisors: 1 3 11 33 797 2391 8767 26301 1068761 3206283 11756371 35269113 851802517 2555407551 9369827687 28109483061