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10806979 = 28138459
BaseRepresentation
bin101001001110…
…011011000011
3202100001101111
4221032123003
510231310404
61023344151
7160600141
oct51163303
922301344
1010806979
116111497
123752057
132314c81
141614591
15e37104
hexa4e6c3

10806979 has 4 divisors (see below), whose sum is σ = 10845720. Its totient is φ = 10768240.

The previous prime is 10806973. The next prime is 10806989. The reversal of 10806979 is 97960801.

10806979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10806979 - 211 = 10804931 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 (10806973) 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, 18949 + ... + 19510.

It is an arithmetic number, because the mean of its divisors is an integer number (2711430).

Almost surely, 210806979 is an apocalyptic number.

10806979 is a deficient number, since it is larger than the sum of its proper divisors (38741).

10806979 is an equidigital number, since it uses as much as digits as its factorization.

10806979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38740.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 10806979 is about 3287.3969945840. The cubic root of 10806979 is about 221.0894923622.

The spelling of 10806979 in words is "ten million, eight hundred six thousand, nine hundred seventy-nine".

Divisors: 1 281 38459 10806979