726321472 has 28 divisors (see below), whose sum is σ = 1490997780. Its totient is φ = 350637056.

The previous prime is 726321451. The next prime is 726321499. The reversal of 726321472 is 274123627.

It can be written as a sum of positive squares in 2 ways, for example, as 524226816 + 202094656 = 22896^2 + 14216^2 .

It is a super-3 number, since 3×726321472³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193813 + ... + 197524.

Almost surely, 2^726321472 is an apocalyptic number.

It is an amenable number.

726321472 is an abundant number, since it is smaller than the sum of its proper divisors (764676308).

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

726321472 is a wasteful number, since it uses less digits than its factorization.

726321472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391378 (or 391368 counting only the distinct ones).

The product of its digits is 28224, while the sum is 34.

The square root of 726321472 is about 26950.3519828591. The cubic root of 726321472 is about 898.8963723293.

The spelling of 726321472 in words is "seven hundred twenty-six million, three hundred twenty-one thousand, four hundred seventy-two".