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13267897 = 43930223
BaseRepresentation
bin110010100111…
…001110111001
3220222002010121
4302213032321
511344033042
61152213241
7220526626
oct62471671
926862117
1013267897
117542405
12453a221
132997136
141a9534d
151271367
hexca73b9

13267897 has 4 divisors (see below), whose sum is σ = 13298560. Its totient is φ = 13237236.

The previous prime is 13267879. The next prime is 13267921. The reversal of 13267897 is 79876231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13267897 - 211 = 13265849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13267847) 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, 14673 + ... + 15550.

It is an arithmetic number, because the mean of its divisors is an integer number (3324640).

Almost surely, 213267897 is an apocalyptic number.

It is an amenable number.

13267897 is a deficient number, since it is larger than the sum of its proper divisors (30663).

13267897 is an equidigital number, since it uses as much as digits as its factorization.

13267897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30662.

The product of its digits is 127008, while the sum is 43.

The square root of 13267897 is about 3642.5124570823. The cubic root of 13267897 is about 236.7376672073.

The spelling of 13267897 in words is "thirteen million, two hundred sixty-seven thousand, eight hundred ninety-seven".

Divisors: 1 439 30223 13267897