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12790269 = 321421141
BaseRepresentation
bin110000110010…
…100111111101
3220001210221200
4300302213331
511233242034
61134050113
7213500262
oct60624775
926053850
1012790269
117246578
124349939
13285a90b
1419ad269
1511c9a99
hexc329fd

12790269 has 6 divisors (see below), whose sum is σ = 18474846. Its totient is φ = 8526840.

The previous prime is 12790241. The next prime is 12790301. The reversal of 12790269 is 96209721.

It can be written as a sum of positive squares in only one way, i.e., 12744900 + 45369 = 3570^2 + 213^2 .

It is not a de Polignac number, because 12790269 - 29 = 12789757 is a prime.

It is a super-2 number, since 2×127902692 = 327181962184722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12794269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 710562 + ... + 710579.

It is an arithmetic number, because the mean of its divisors is an integer number (3079141).

Almost surely, 212790269 is an apocalyptic number.

It is an amenable number.

12790269 is a deficient number, since it is larger than the sum of its proper divisors (5684577).

12790269 is a wasteful number, since it uses less digits than its factorization.

12790269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421147 (or 1421144 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 12790269 is about 3576.3485568384. The cubic root of 12790269 is about 233.8621256609.

The spelling of 12790269 in words is "twelve million, seven hundred ninety thousand, two hundred sixty-nine".

Divisors: 1 3 9 1421141 4263423 12790269