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12292805 = 57351223
BaseRepresentation
bin101110111001…
…001011000101
3212010112120002
4232321023011
511121332210
61115251045
7206326040
oct56711305
925115502
1012292805
116a36848
124149a85
132715365
1418bdc57
15112c4a5
hexbb92c5

12292805 has 8 divisors (see below), whose sum is σ = 16858752. Its totient is φ = 8429328.

The previous prime is 12292801. The next prime is 12292823. The reversal of 12292805 is 50829221.

12292805 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12292805 - 22 = 12292801 is a prime.

It is a super-2 number, since 2×122928052 = 302226109536050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12292801) 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 7 ways as a sum of consecutive naturals, for example, 175577 + ... + 175646.

It is an arithmetic number, because the mean of its divisors is an integer number (2107344).

Almost surely, 212292805 is an apocalyptic number.

It is an amenable number.

12292805 is a deficient number, since it is larger than the sum of its proper divisors (4565947).

12292805 is an equidigital number, since it uses as much as digits as its factorization.

12292805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351235.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12292805 is about 3506.1096674234. The cubic root of 12292805 is about 230.7900054944.

The spelling of 12292805 in words is "twelve million, two hundred ninety-two thousand, eight hundred five".

Divisors: 1 5 7 35 351223 1756115 2458561 12292805