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12395217 = 318472237
BaseRepresentation
bin101111010010…
…001011010001
3212022202001010
4233102023101
511133121332
61121401133
7210233442
oct57221321
925282033
1012395217
116aa678a
1241991a9
13274cb63
1419092c9
15114c9cc
hexbd22d1

12395217 has 8 divisors (see below), whose sum is σ = 16543296. Its totient is φ = 8255312.

The previous prime is 12395189. The next prime is 12395219. The reversal of 12395217 is 71259321.

12395217 is digitally balanced in base 2 and base 4, because in such bases 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 12395217 - 28 = 12394961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12395219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4423 + ... + 6659.

It is an arithmetic number, because the mean of its divisors is an integer number (2067912).

Almost surely, 212395217 is an apocalyptic number.

It is an amenable number.

12395217 is a deficient number, since it is larger than the sum of its proper divisors (4148079).

12395217 is a wasteful number, since it uses less digits than its factorization.

12395217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087.

The product of its digits is 3780, while the sum is 30.

The square root of 12395217 is about 3520.6841664654. The cubic root of 12395217 is about 231.4291417344.

The spelling of 12395217 in words is "twelve million, three hundred ninety-five thousand, two hundred seventeen".

Divisors: 1 3 1847 2237 5541 6711 4131739 12395217