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12388323 = 319217339
BaseRepresentation
bin101111010000…
…011111100011
3212022101120210
4233100133203
511132411243
61121305203
7210204363
oct57203743
925271523
1012388323
116aa1592
124195203
13274998c
1419069a3
15114a933
hexbd07e3

12388323 has 8 divisors (see below), whose sum is σ = 17387200. Its totient is φ = 7824168.

The previous prime is 12388309. The next prime is 12388339. The reversal of 12388323 is 32388321.

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

It is not a de Polignac number, because 12388323 - 28 = 12388067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12381323) 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, 108613 + ... + 108726.

It is an arithmetic number, because the mean of its divisors is an integer number (2173400).

Almost surely, 212388323 is an apocalyptic number.

12388323 is a deficient number, since it is larger than the sum of its proper divisors (4998877).

12388323 is a wasteful number, since it uses less digits than its factorization.

12388323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217361.

The product of its digits is 6912, while the sum is 30.

The square root of 12388323 is about 3519.7049592260. The cubic root of 12388323 is about 231.3862281819.

The spelling of 12388323 in words is "twelve million, three hundred eighty-eight thousand, three hundred twenty-three".

Divisors: 1 3 19 57 217339 652017 4129441 12388323