720492 has 12 divisors (see below), whose sum is σ = 1681176. Its totient is φ = 240160.

The previous prime is 720491. The next prime is 720497. The reversal of 720492 is 294027.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (720491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30009 + ... + 30032.

It is an arithmetic number, because the mean of its divisors is an integer number (140098).

2⁷²⁰⁴⁹² is an apocalyptic number.

It is an amenable number.

720492 is an abundant number, since it is smaller than the sum of its proper divisors (960684).

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

720492 is a wasteful number, since it uses less digits than its factorization.

720492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60048 (or 60046 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 720492 is about 848.8180016941. The cubic root of 720492 is about 89.6485055710.

The spelling of 720492 in words is "seven hundred twenty thousand, four hundred ninety-two".