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12813797 = 59972239
BaseRepresentation
bin110000111000…
…010111100101
3220010000020002
4300320113211
511240020142
61134351045
7213626003
oct60702745
926100202
1012813797
117262217
12435b485
132868539
1419b7a73
1511d1a32
hexc385e5

12813797 has 8 divisors (see below), whose sum is σ = 13171200. Its totient is φ = 12461184.

The previous prime is 12813791. The next prime is 12813833. The reversal of 12813797 is 79731821.

12813797 is digitally balanced in base 2, because in such base 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 12813797 - 212 = 12809701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12813797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813791) 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, 4604 + ... + 6842.

It is an arithmetic number, because the mean of its divisors is an integer number (1646400).

Almost surely, 212813797 is an apocalyptic number.

It is an amenable number.

12813797 is a deficient number, since it is larger than the sum of its proper divisors (357403).

12813797 is an equidigital number, since it uses as much as digits as its factorization.

12813797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395.

The product of its digits is 21168, while the sum is 38.

The square root of 12813797 is about 3579.6364340530. The cubic root of 12813797 is about 234.0054361121.

The spelling of 12813797 in words is "twelve million, eight hundred thirteen thousand, seven hundred ninety-seven".

Divisors: 1 59 97 2239 5723 132101 217183 12813797