7813226 has 4 divisors (see below), whose sum is σ = 11719842. Its totient is φ = 3906612.

The previous prime is 7813213. The next prime is 7813241. The reversal of 7813226 is 6223187.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6375625 + 1437601 = 2525^2 + 1199^2 .

It is a super-2 number, since 2×7813226² = 122093001054152, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1953305 + ... + 1953308.

Almost surely, 2^7813226 is an apocalyptic number.

7813226 is a deficient number, since it is larger than the sum of its proper divisors (3906616).

7813226 is a wasteful number, since it uses less digits than its factorization.

7813226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906615.

The product of its digits is 4032, while the sum is 29.

The square root of 7813226 is about 2795.2148396859. The cubic root of 7813226 is about 198.4312777225.

The spelling of 7813226 in words is "seven million, eight hundred thirteen thousand, two hundred twenty-six".