726220422 has 12 divisors (see below), whose sum is σ = 1573477620. Its totient is φ = 242073468.

The previous prime is 726220393. The next prime is 726220427. The reversal of 726220422 is 224022627.

726220422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×726220422² = 1054792202659716168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726220427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20172772 + ... + 20172807.

It is an arithmetic number, because the mean of its divisors is an integer number (131123135).

Almost surely, 2^726220422 is an apocalyptic number.

726220422 is an abundant number, since it is smaller than the sum of its proper divisors (847257198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

726220422 is a wasteful number, since it uses less digits than its factorization.

726220422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40345587 (or 40345584 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 726220422 is about 26948.4771740445. The cubic root of 726220422 is about 898.8546838600.

The spelling of 726220422 in words is "seven hundred twenty-six million, two hundred twenty thousand, four hundred twenty-two".