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12106069 = 38931121
BaseRepresentation
bin101110001011…
…100101010101
3211210001101221
4232023211111
511044343234
61111250341
7204620443
oct56134525
924701357
1012106069
116919518
1240799b1
13267b371
141871b93
1510e1eb4
hexb8b955

12106069 has 4 divisors (see below), whose sum is σ = 12137580. Its totient is φ = 12074560.

The previous prime is 12106063. The next prime is 12106093. The reversal of 12106069 is 96060121.

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 4571044 + 7535025 = 2138^2 + 2745^2 .

It is not a de Polignac number, because 12106069 - 27 = 12105941 is a prime.

It is a super-2 number, since 2×121060692 = 293113813265522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12106063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15172 + ... + 15949.

It is an arithmetic number, because the mean of its divisors is an integer number (3034395).

Almost surely, 212106069 is an apocalyptic number.

It is an amenable number.

12106069 is a deficient number, since it is larger than the sum of its proper divisors (31511).

12106069 is an equidigital number, since it uses as much as digits as its factorization.

12106069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31510.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 12106069 is about 3479.3776742400. The cubic root of 12106069 is about 229.6154190558.

The spelling of 12106069 in words is "twelve million, one hundred six thousand, sixty-nine".

Divisors: 1 389 31121 12106069