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12422869 = 17730757
BaseRepresentation
bin101111011000…
…111011010101
3212101010222021
4233120323111
511140012434
61122133141
7210410164
oct57307325
925333867
1012422869
117015538
1241b11b1
13275c614
1419153db
151155cb4
hexbd8ed5

12422869 has 4 divisors (see below), whose sum is σ = 13153644. Its totient is φ = 11692096.

The previous prime is 12422867. The next prime is 12422873. The reversal of 12422869 is 96822421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96822421 = 137706733.

It can be written as a sum of positive squares in 2 ways, for example, as 5062500 + 7360369 = 2250^2 + 2713^2 .

It is a cyclic number.

It is not a de Polignac number, because 12422869 - 21 = 12422867 is a prime.

It is a super-2 number, since 2×124228692 = 308655348382322, 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 (12422867) 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, 365362 + ... + 365395.

It is an arithmetic number, because the mean of its divisors is an integer number (3288411).

Almost surely, 212422869 is an apocalyptic number.

It is an amenable number.

12422869 is a deficient number, since it is larger than the sum of its proper divisors (730775).

12422869 is an equidigital number, since it uses as much as digits as its factorization.

12422869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730774.

The product of its digits is 13824, while the sum is 34.

The square root of 12422869 is about 3524.6090563352. The cubic root of 12422869 is about 231.6011092962.

The spelling of 12422869 in words is "twelve million, four hundred twenty-two thousand, eight hundred sixty-nine".

Divisors: 1 17 730757 12422869