7226813 has 8 divisors (see below), whose sum is σ = 8138496. Its totient is φ = 6357600.

The previous prime is 7226759. The next prime is 7226831. The reversal of 7226813 is 3186227.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7226813 - 2¹⁶ = 7161277 is a prime.

It is a super-2 number, since 2×7226813² = 104453652273938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7226833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10256 + ... + 10937.

It is an arithmetic number, because the mean of its divisors is an integer number (1017312).

Almost surely, 2^7226813 is an apocalyptic number.

It is an amenable number.

7226813 is a deficient number, since it is larger than the sum of its proper divisors (911683).

7226813 is a wasteful number, since it uses less digits than its factorization.

7226813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21235.

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

The square root of 7226813 is about 2688.2732376007. The cubic root of 7226813 is about 193.3372806038.

The spelling of 7226813 in words is "seven million, two hundred twenty-six thousand, eight hundred thirteen".