732720 has 80 divisors (see below), whose sum is σ = 2356992. Its totient is φ = 188160.

The previous prime is 732713. The next prime is 732731. The reversal of 732720 is 27237.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10285 + ... + 10355.

2⁷³²⁷²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 732720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1178496).

732720 is an abundant number, since it is smaller than the sum of its proper divisors (1624272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

732720 is a wasteful number, since it uses less digits than its factorization.

732720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 732720 is about 855.9906541546. The cubic root of 732720 is about 90.1528267615.

Adding to 732720 its reverse (27237), we get a palindrome (759957).

The spelling of 732720 in words is "seven hundred thirty-two thousand, seven hundred twenty".