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5643423 = 326191013
BaseRepresentation
bin10101100001110010011111
3101121201022200
4111201302133
52421042143
6320542543
765653062
oct25416237
911551280
105643423
113204a95
121a81a53
131227906
14a6c8d9
157671d3
hex561c9f

5643423 has 12 divisors (see below), whose sum is σ = 8172840. Its totient is φ = 3752496.

The previous prime is 5643413. The next prime is 5643427. The reversal of 5643423 is 3243465.

5643423 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5643423 - 29 = 5642911 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 5 + 64 + 48 + 312 + 49 + 25 + 314 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5643427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5065 + ... + 6077.

It is an arithmetic number, because the mean of its divisors is an integer number (681070).

Almost surely, 25643423 is an apocalyptic number.

5643423 is a deficient number, since it is larger than the sum of its proper divisors (2529417).

5643423 is a wasteful number, since it uses less digits than its factorization.

5643423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 1635 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 5643423 is about 2375.5889796006. The cubic root of 5643423 is about 178.0386125887.

Adding to 5643423 its reverse (3243465), we get a palindrome (8886888).

The spelling of 5643423 in words is "five million, six hundred forty-three thousand, four hundred twenty-three".

Divisors: 1 3 9 619 1013 1857 3039 5571 9117 627047 1881141 5643423