726240704 has 56 divisors (see below), whose sum is σ = 1666939008. Its totient is φ = 307480320.

The previous prime is 726240703. The next prime is 726240721. The reversal of 726240704 is 407042627.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726240703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27419 + ... + 46949.

It is an arithmetic number, because the mean of its divisors is an integer number (29766768).

Almost surely, 2^726240704 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 726240704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833469504).

726240704 is an abundant number, since it is smaller than the sum of its proper divisors (940698304).

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

726240704 is a wasteful number, since it uses less digits than its factorization.

726240704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19633 (or 19623 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 726240704 is about 26948.8534821057. The cubic root of 726240704 is about 898.8630515679.

The spelling of 726240704 in words is "seven hundred twenty-six million, two hundred forty thousand, seven hundred four".