726434720 has 96 divisors (see below), whose sum is σ = 1918074816. Its totient is φ = 257689600.

The previous prime is 726434699. The next prime is 726434729. The reversal of 726434720 is 27434627.

It is not an unprimeable number, because it can be changed into a prime (726434729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67127 + ... + 77193.

It is an arithmetic number, because the mean of its divisors is an integer number (19979946).

Almost surely, 2^726434720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726434720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (959037408).

726434720 is an abundant number, since it is smaller than the sum of its proper divisors (1191640096).

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

726434720 is a wasteful number, since it uses less digits than its factorization.

726434720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10134 (or 10126 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 726434720 is about 26952.4529495925. The cubic root of 726434720 is about 898.9430885241.

The spelling of 726434720 in words is "seven hundred twenty-six million, four hundred thirty-four thousand, seven hundred twenty".