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7268681 = 71038383
BaseRepresentation
bin11011101110100101001001
3111200021202102
4123232211021
53330044211
6415443145
7115532330
oct33564511
914607672
107268681
114115082
1225264b5
1316765c4
14d72d17
15988a3b
hex6ee949

7268681 has 4 divisors (see below), whose sum is σ = 8307072. Its totient is φ = 6230292.

The previous prime is 7268641. The next prime is 7268693. The reversal of 7268681 is 1868627.

7268681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7268681 - 218 = 7006537 is a prime.

It is a super-2 number, since 2×72686812 = 105667446959522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7268641) 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 3 ways as a sum of consecutive naturals, for example, 519185 + ... + 519198.

It is an arithmetic number, because the mean of its divisors is an integer number (2076768).

Almost surely, 27268681 is an apocalyptic number.

It is an amenable number.

7268681 is a deficient number, since it is larger than the sum of its proper divisors (1038391).

7268681 is a wasteful number, since it uses less digits than its factorization.

7268681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038390.

The product of its digits is 32256, while the sum is 38.

The square root of 7268681 is about 2696.0491464363. The cubic root of 7268681 is about 193.7099235874.

The spelling of 7268681 in words is "seven million, two hundred sixty-eight thousand, six hundred eighty-one".

Divisors: 1 7 1038383 7268681