Search a number
-
+
12838718 = 219337861
BaseRepresentation
bin110000111110…
…011100111110
3220011021102002
4300332130332
511241314333
61135102302
7214061444
oct60763476
926137362
1012838718
117279a12
124371992
132876999
1419c2b94
1511d90e8
hexc3e73e

12838718 has 8 divisors (see below), whose sum is σ = 20271720. Its totient is φ = 6081480.

The previous prime is 12838691. The next prime is 12838733. The reversal of 12838718 is 81783821.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 337861 = 12838718 / (1 + 2 + 8 + 3 + 8 + 7 + 1 + 8).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168893 + ... + 168968.

It is an arithmetic number, because the mean of its divisors is an integer number (2533965).

Almost surely, 212838718 is an apocalyptic number.

12838718 is a deficient number, since it is larger than the sum of its proper divisors (7433002).

12838718 is a wasteful number, since it uses less digits than its factorization.

12838718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337882.

The product of its digits is 21504, while the sum is 38.

The square root of 12838718 is about 3583.1156833125. The cubic root of 12838718 is about 234.1570402249.

It can be divided in two parts, 1283 and 8718, that added together give a palindrome (10001).

The spelling of 12838718 in words is "twelve million, eight hundred thirty-eight thousand, seven hundred eighteen".

Divisors: 1 2 19 38 337861 675722 6419359 12838718