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10277728105 = 52055545621
BaseRepresentation
bin10011001001001100…
…11010111101101001
3222112021100200110111
421210212122331221
5132022044244410
64415503214321
7512456150611
oct114446327551
928467320414
1010277728105
1143a4567277
121ba9ba73a1
13c7a3baa28
146d6db9a41
1540246cb8a
hex26499af69

10277728105 has 4 divisors (see below), whose sum is σ = 12333273732. Its totient is φ = 8222182480.

The previous prime is 10277728103. The next prime is 10277728117. The reversal of 10277728105 is 50182777201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50182777201 = 74317675253.

It can be written as a sum of positive squares in 2 ways, for example, as 7826587024 + 2451141081 = 88468^2 + 49509^2 .

It is not a de Polignac number, because 10277728105 - 21 = 10277728103 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10277728103) 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, 1027772806 + ... + 1027772815.

It is an arithmetic number, because the mean of its divisors is an integer number (3083318433).

Almost surely, 210277728105 is an apocalyptic number.

It is an amenable number.

10277728105 is a deficient number, since it is larger than the sum of its proper divisors (2055545627).

10277728105 is an equidigital number, since it uses as much as digits as its factorization.

10277728105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055545626.

The product of its (nonzero) digits is 54880, while the sum is 40.

The spelling of 10277728105 in words is "ten billion, two hundred seventy-seven million, seven hundred twenty-eight thousand, one hundred five".

Divisors: 1 5 2055545621 10277728105