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10806389 = 11323353
BaseRepresentation
bin101001001110…
…010001110101
3202100000120122
4221032101311
510231301024
61023341325
7160565336
oct51162165
922300518
1010806389
116111000
123751845
132314919
14161428d
15e36d5e
hexa4e475

10806389 has 16 divisors (see below), whose sum is σ = 12438144. Its totient is φ = 9370240.

The previous prime is 10806379. The next prime is 10806391. The reversal of 10806389 is 98360801.

10806389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10806389 - 216 = 10740853 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10806349) 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, 30437 + ... + 30789.

It is an arithmetic number, because the mean of its divisors is an integer number (777384).

Almost surely, 210806389 is an apocalyptic number.

It is an amenable number.

10806389 is a deficient number, since it is larger than the sum of its proper divisors (1631755).

10806389 is an equidigital number, since it uses as much as digits as its factorization.

10806389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 10806389 is about 3287.3072567072. The cubic root of 10806389 is about 221.0854688766.

The spelling of 10806389 in words is "ten million, eight hundred six thousand, three hundred eighty-nine".

Divisors: 1 11 23 121 253 353 1331 2783 3883 8119 30613 42713 89309 469843 982399 10806389