726218122 has 16 divisors (see below), whose sum is σ = 1270353600. Its totient is φ = 311236044.

The previous prime is 726218113. The next prime is 726218147. The reversal of 726218122 is 221812627.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528628 + ... + 529999.

It is an arithmetic number, because the mean of its divisors is an integer number (79397100).

Almost surely, 2^726218122 is an apocalyptic number.

726218122 is a deficient number, since it is larger than the sum of its proper divisors (544135478).

726218122 is a wasteful number, since it uses less digits than its factorization.

726218122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058650 (or 1058636 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 726218122 is about 26948.4344999853. The cubic root of 726218122 is about 898.8537349434.

The spelling of 726218122 in words is "seven hundred twenty-six million, two hundred eighteen thousand, one hundred twenty-two".