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1069405 = 5213881
BaseRepresentation
bin100000101000101011101
32000022221121
410011011131
5233210110
634530541
712042541
oct4050535
92008847
101069405
11670507
12436a51
132b59ac
141dba21
15161cda
hex10515d

1069405 has 4 divisors (see below), whose sum is σ = 1283292. Its totient is φ = 855520.

The previous prime is 1069379. The next prime is 1069421. The reversal of 1069405 is 5049601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 198916 + 870489 = 446^2 + 933^2 .

It is not a de Polignac number, because 1069405 - 219 = 545117 is a prime.

It is a super-2 number, since 2×10694052 = 2287254108050, which contains 22 as substring.

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 1069405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106936 + ... + 106945.

It is an arithmetic number, because the mean of its divisors is an integer number (320823).

21069405 is an apocalyptic number.

It is an amenable number.

1069405 is a deficient number, since it is larger than the sum of its proper divisors (213887).

1069405 is an equidigital number, since it uses as much as digits as its factorization.

1069405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213886.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1069405 is about 1034.1203991799. The cubic root of 1069405 is about 102.2619500503.

The spelling of 1069405 in words is "one million, sixty-nine thousand, four hundred five".

Divisors: 1 5 213881 1069405