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2397 = 31747
BaseRepresentation
bin100101011101
310021210
4211131
534042
615033
76663
oct4535
93253
102397
11188a
121479
131125
14c33
15a9c
hex95d

2397 has 8 divisors (see below), whose sum is σ = 3456. Its totient is φ = 1472.

The previous prime is 2393. The next prime is 2399. The reversal of 2397 is 7932.

Adding to 2397 its product of digits (378), we get a triangular number (2775 = T74).

It can be divided in two parts, 23 and 97, that added together give a triangular number (120 = T15).

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 2397 - 22 = 2393 is a prime.

It is a plaindrome in base 11, base 12 and base 13.

It is a nialpdrome in base 7 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28 + ... + 74.

It is an arithmetic number, because the mean of its divisors is an integer number (432).

22397 is an apocalyptic number.

It is an amenable number.

2397 is a deficient number, since it is larger than the sum of its proper divisors (1059).

2397 is a wasteful number, since it uses less digits than its factorization.

2397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67.

The product of its digits is 378, while the sum is 21.

The square root of 2397 is about 48.9591666596. The cubic root of 2397 is about 13.3830780677.

The spelling of 2397 in words is "two thousand, three hundred ninety-seven".

Divisors: 1 3 17 47 51 141 799 2397