Search a number
-
+
6444031 = 113771223
BaseRepresentation
bin11000100101001111111111
3110010101112211
4120211033333
53122202111
6350041251
7105526156
oct30451777
913111484
106444031
113701550
1221a9227
131448149
14bda59d
15874521
hex6253ff

6444031 has 16 divisors (see below), whose sum is σ = 7354368. Its totient is φ = 5594400.

The previous prime is 6444019. The next prime is 6444041. The reversal of 6444031 is 1304446.

It is a happy number.

It is not a de Polignac number, because 6444031 - 25 = 6443999 is a prime.

It is a super-2 number, since 2×64440312 = 83051071057922, which contains 22 as substring.

It is a Duffinian number.

6444031 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6443993 and 6444011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28786 + ... + 29008.

It is an arithmetic number, because the mean of its divisors is an integer number (459648).

Almost surely, 26444031 is an apocalyptic number.

6444031 is a deficient number, since it is larger than the sum of its proper divisors (910337).

6444031 is a wasteful number, since it uses less digits than its factorization.

6444031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 6444031 is about 2538.5096021091. The cubic root of 6444031 is about 186.0883593748.

Adding to 6444031 its reverse (1304446), we get a palindrome (7748477).

The spelling of 6444031 in words is "six million, four hundred forty-four thousand, thirty-one".

Divisors: 1 11 37 71 223 407 781 2453 2627 8251 15833 28897 90761 174163 585821 6444031