726919434 has 72 divisors (see below), whose sum is σ = 1689187968. Its totient is φ = 234358920.

The previous prime is 726919421. The next prime is 726919441. The reversal of 726919434 is 434919627.

It is a happy number.

726919434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 726919434.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 405889 + ... + 407675.

It is an arithmetic number, because the mean of its divisors is an integer number (23460944).

Almost surely, 2^726919434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726919434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (844593984).

726919434 is an abundant number, since it is smaller than the sum of its proper divisors (962268534).

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

726919434 is an equidigital number, since it uses as much as digits as its factorization.

726919434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844 (or 1823 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 726919434 is about 26961.4434702595. The cubic root of 726919434 is about 899.1429841745.

The spelling of 726919434 in words is "seven hundred twenty-six million, nine hundred nineteen thousand, four hundred thirty-four".