732221 has 8 divisors (see below), whose sum is σ = 865920. Its totient is φ = 605808.

The previous prime is 732217. The next prime is 732229. The reversal of 732221 is 122237.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 732221 - 2² = 732217 is a prime.

It is a super-2 number, since 2×732221² = 1072295185682, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 732221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (732229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601 + ... + 2006.

It is an arithmetic number, because the mean of its divisors is an integer number (108240).

2⁷³²²²¹ is an apocalyptic number.

It is an amenable number.

732221 is a deficient number, since it is larger than the sum of its proper divisors (133699).

732221 is a wasteful number, since it uses less digits than its factorization.

732221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643.

The product of its digits is 168, while the sum is 17.

The square root of 732221 is about 855.6991293673. The cubic root of 732221 is about 90.1323566972.

Adding to 732221 its reverse (122237), we get a palindrome (854458).

The spelling of 732221 in words is "seven hundred thirty-two thousand, two hundred twenty-one".