720280 has 32 divisors (see below), whose sum is σ = 1769040. Its totient is φ = 261760.

The previous prime is 720257. The next prime is 720281. The reversal of 720280 is 82027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720281) 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, 379 + ... + 1258.

2⁷²⁰²⁸⁰ is an apocalyptic number.

It is an amenable number.

720280 is an abundant number, since it is smaller than the sum of its proper divisors (1048760).

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

720280 is a wasteful number, since it uses less digits than its factorization.

720280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 720280 is about 848.6931129684. The cubic root of 720280 is about 89.6397118821.

It can be divided in two parts, 720 and 280, that added together give a cube (1000 = 10³).

The spelling of 720280 in words is "seven hundred twenty thousand, two hundred eighty".