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10830805 = 52166161
BaseRepresentation
bin101001010100…
…001111010101
3202101021001221
4221110033111
510233041210
61024050341
7161026456
oct51241725
922337057
1010830805
116128387
1237639b1
132322a7b
14161d12d
15e3e1da
hexa543d5

10830805 has 4 divisors (see below), whose sum is σ = 12996972. Its totient is φ = 8664640.

The previous prime is 10830803. The next prime is 10830823. The reversal of 10830805 is 50803801.

10830805 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50803801 = 383132647.

It can be written as a sum of positive squares in 2 ways, for example, as 7273809 + 3556996 = 2697^2 + 1886^2 .

It is not a de Polignac number, because 10830805 - 21 = 10830803 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 10830805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10830803) 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, 1083076 + ... + 1083085.

It is an arithmetic number, because the mean of its divisors is an integer number (3249243).

Almost surely, 210830805 is an apocalyptic number.

It is an amenable number.

10830805 is a deficient number, since it is larger than the sum of its proper divisors (2166167).

10830805 is an equidigital number, since it uses as much as digits as its factorization.

10830805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166166.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 10830805 is about 3291.0188392047. The cubic root of 10830805 is about 221.2518507724.

The spelling of 10830805 in words is "ten million, eight hundred thirty thousand, eight hundred five".

Divisors: 1 5 2166161 10830805