726382321 has 12 divisors (see below), whose sum is σ = 862956288. Its totient is φ = 609364392.

The previous prime is 726382289. The next prime is 726382333. The reversal of 726382321 is 123283627.

It is not a de Polignac number, because 726382321 - 2⁵ = 726382289 is a prime.

It is a super-2 number, since 2×726382321² = 1055262552522694082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726382361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155401 + ... + 160006.

It is an arithmetic number, because the mean of its divisors is an integer number (71913024).

Almost surely, 2^726382321 is an apocalyptic number.

It is an amenable number.

726382321 is a deficient number, since it is larger than the sum of its proper divisors (136573967).

726382321 is a wasteful number, since it uses less digits than its factorization.

726382321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315468 (or 315461 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 726382321 is about 26951.4808684050. The cubic root of 726382321 is about 898.9214738948.

The spelling of 726382321 in words is "seven hundred twenty-six million, three hundred eighty-two thousand, three hundred twenty-one".