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28080006211 = 54195181769
BaseRepresentation
bin11010001001101100…
…101110010001000011
32200110221111010001001
4122021230232101003
5430001440144321
620522203552431
72012564054215
oct321154562103
980427433031
1028080006211
11109aa482304
125537b2b717
132856680bba
1415054585b5
15ae52bbc91
hex689b2e443

28080006211 has 4 divisors (see below), whose sum is σ = 28085193400. Its totient is φ = 28074819024.

The previous prime is 28080006209. The next prime is 28080006239. The reversal of 28080006211 is 11260008082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28080006211 - 21 = 28080006209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28080006211.

It is not an unprimeable number, because it can be changed into a prime (28080006011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2585466 + ... + 2596303.

It is an arithmetic number, because the mean of its divisors is an integer number (7021298350).

Almost surely, 228080006211 is an apocalyptic number.

28080006211 is a deficient number, since it is larger than the sum of its proper divisors (5187189).

28080006211 is an equidigital number, since it uses as much as digits as its factorization.

28080006211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5187188.

The product of its (nonzero) digits is 1536, while the sum is 28.

The spelling of 28080006211 in words is "twenty-eight billion, eighty million, six thousand, two hundred eleven".

Divisors: 1 5419 5181769 28080006211