324972729 has 15 divisors (see below), whose sum is σ = 485695573. Its totient is φ = 216540324.

The previous prime is 324972719. The next prime is 324972737. The reversal of 324972729 is 927279423.

The square root of 324972729 is 18027.

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

It is a de Polignac number, because none of the positive numbers 2^k-324972729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (324972719) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 161242 + ... + 163244.

Almost surely, 2^324972729 is an apocalyptic number.

324972729 is the 18027-th square number.

324972729 is the 9014-th centered octagonal number.

It is an amenable number.

324972729 is a deficient number, since it is larger than the sum of its proper divisors (160722844).

324972729 is an frugal number, since it uses more digits than its factorization.

324972729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018 (or 2006 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The cubic root of 324972729 is about 687.5152024848.

The spelling of 324972729 in words is "three hundred twenty-four million, nine hundred seventy-two thousand, seven hundred twenty-nine".