726398481 has 16 divisors (see below), whose sum is σ = 1021550400. Its totient is φ = 457858368.

The previous prime is 726398461. The next prime is 726398483. The reversal of 726398481 is 184893627.

It is not a de Polignac number, because 726398481 - 2¹⁰ = 726397457 is a prime.

It is a super-2 number, since 2×726398481² = 1055309506398214722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 726398481.

It is not an unprimeable number, because it can be changed into a prime (726398483) 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, 16495 + ... + 41531.

It is an arithmetic number, because the mean of its divisors is an integer number (63846900).

Almost surely, 2^726398481 is an apocalyptic number.

It is an amenable number.

726398481 is a deficient number, since it is larger than the sum of its proper divisors (295151919).

726398481 is a wasteful number, since it uses less digits than its factorization.

726398481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25568.

The product of its digits is 580608, while the sum is 48.

The square root of 726398481 is about 26951.7806647353. The cubic root of 726398481 is about 898.9281400186.

The spelling of 726398481 in words is "seven hundred twenty-six million, three hundred ninety-eight thousand, four hundred eighty-one".