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7226 = 23613
BaseRepresentation
bin1110000111010
3100220122
41300322
5212401
653242
730032
oct16072
910818
107226
11547a
124222
13339b
1428c2
15221b
hex1c3a

7226 has 4 divisors (see below), whose sum is σ = 10842. Its totient is φ = 3612.

The previous prime is 7219. The next prime is 7229. The reversal of 7226 is 6227.

It is a Cunningham number, because it is equal to 852+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6227 = 13479.

It can be written as a sum of positive squares in only one way, i.e., 7225 + 1 = 85^2 + 1^2 .

It is a plaindrome in base 13.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (7229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805 + ... + 1808.

27226 is an apocalyptic number.

7226 is a deficient number, since it is larger than the sum of its proper divisors (3616).

7226 is a wasteful number, since it uses less digits than its factorization.

7226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615.

The product of its digits is 168, while the sum is 17.

The square root of 7226 is about 85.0058821494. The cubic root of 7226 is about 19.3330030331. Note that the first 3 decimals are identical.

Subtracting from 7226 its reverse (6227), we obtain a palindrome (999).

The spelling of 7226 in words is "seven thousand, two hundred twenty-six".

Divisors: 1 2 3613 7226