720284 has 6 divisors (see below), whose sum is σ = 1260504. Its totient is φ = 360140.

The previous prime is 720283. The next prime is 720289. The reversal of 720284 is 482027.

720284 is nontrivially palindromic in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720284.

It is not an unprimeable number, because it can be changed into a prime (720281) 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 as a sum of consecutive naturals, namely, 90032 + ... + 90039.

It is an arithmetic number, because the mean of its divisors is an integer number (210084).

2⁷²⁰²⁸⁴ is an apocalyptic number.

It is an amenable number.

720284 is a deficient number, since it is larger than the sum of its proper divisors (540220).

720284 is a wasteful number, since it uses less digits than its factorization.

720284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180075 (or 180073 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 720284 is about 848.6954695296. The cubic root of 720284 is about 89.6398778168.

It can be divided in two parts, 720 and 284, that multiplied together give a triangular number (204480 = T₆₃₉).

The spelling of 720284 in words is "seven hundred twenty thousand, two hundred eighty-four".