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12883943 = 17757879
BaseRepresentation
bin110001001001…
…011111100111
3220020120110002
4301021133213
511244241233
61140051515
7214340342
oct61113747
926216402
1012883943
1172aa996
124393b9b
132891447
1419d5459
1511e76e8
hexc497e7

12883943 has 4 divisors (see below), whose sum is σ = 13641840. Its totient is φ = 12126048.

The previous prime is 12883931. The next prime is 12883951. The reversal of 12883943 is 34938821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34938821 = 40498629.

It is a cyclic number.

It is not a de Polignac number, because 12883943 - 218 = 12621799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12883897 and 12883906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12883903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378923 + ... + 378956.

It is an arithmetic number, because the mean of its divisors is an integer number (3410460).

Almost surely, 212883943 is an apocalyptic number.

12883943 is a deficient number, since it is larger than the sum of its proper divisors (757897).

12883943 is an equidigital number, since it uses as much as digits as its factorization.

12883943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757896.

The product of its digits is 41472, while the sum is 38.

The square root of 12883943 is about 3589.4209839471. The cubic root of 12883943 is about 234.4316611571.

The spelling of 12883943 in words is "twelve million, eight hundred eighty-three thousand, nine hundred forty-three".

Divisors: 1 17 757879 12883943