732021 has 12 divisors (see below), whose sum is σ = 1028448. Its totient is φ = 462264.

The previous prime is 731999. The next prime is 732023. The reversal of 732021 is 120237.

It is not a de Polignac number, because 732021 - 2⁶ = 731957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (732023) 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, 7056 + ... + 7158.

It is an arithmetic number, because the mean of its divisors is an integer number (85704).

2⁷³²⁰²¹ is an apocalyptic number.

It is an amenable number.

732021 is a deficient number, since it is larger than the sum of its proper divisors (296427).

732021 is a wasteful number, since it uses less digits than its factorization.

732021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 732021 is about 855.5822578806. The cubic root of 732021 is about 90.1241496518.

Adding to 732021 its reverse (120237), we get a palindrome (852258).

The spelling of 732021 in words is "seven hundred thirty-two thousand, twenty-one".