724255744 has 55 divisors (see below), whose sum is σ = 1499511427. Its totient is φ = 349640704.

The previous prime is 724255687. The next prime is 724255769. The reversal of 724255744 is 447552427.

The square root of 724255744 is 26912.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 1721344 + 722534400 = 1312^2 + 26880^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=4, B=116.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 724255697 and 724255706.

It is an unprimeable number.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 24974322 + ... + 24974350.

Almost surely, 2^724255744 is an apocalyptic number.

724255744 is the 26912-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724255744

724255744 is an abundant number, since it is smaller than the sum of its proper divisors (775255683).

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

724255744 is an frugal number, since it uses more digits than its factorization.

724255744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 31 counting only the distinct ones).

The product of its digits is 313600, while the sum is 40.

The cubic root of 724255744 is about 898.0433806256.

Multiplying 724255744 by its product of digits (313600), we get a square (227126601318400 = 15070720²).

The spelling of 724255744 in words is "seven hundred twenty-four million, two hundred fifty-five thousand, seven hundred forty-four".