332721 has 8 divisors (see below), whose sum is σ = 492960. Its totient is φ = 221796.

The previous prime is 332711. The next prime is 332729. The reversal of 332721 is 127233.

It is not a de Polignac number, because 332721 - 2¹⁰ = 331697 is a prime.

It is a super-2 number, since 2×332721² = 221406527682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 332694 and 332703.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 332721.

It is not an unprimeable number, because it can be changed into a prime (332729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6135 + ... + 6188.

It is an arithmetic number, because the mean of its divisors is an integer number (61620).

2³³²⁷²¹ is an apocalyptic number.

It is an amenable number.

332721 is a deficient number, since it is larger than the sum of its proper divisors (160239).

332721 is a wasteful number, since it uses less digits than its factorization.

332721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12332 (or 12326 counting only the distinct ones).

The product of its digits is 252, while the sum is 18.

The square root of 332721 is about 576.8197292049. The cubic root of 332721 is about 69.2936445887.

Adding to 332721 its reverse (127233), we get a palindrome (459954).

The spelling of 332721 in words is "three hundred thirty-two thousand, seven hundred twenty-one".