720270 has 48 divisors (see below), whose sum is σ = 1920672. Its totient is φ = 187200.

The previous prime is 720257. The next prime is 720281. The reversal of 720270 is 72027.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

720270 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 23 ways as a sum of consecutive naturals, for example, 4695 + ... + 4845.

It is an arithmetic number, because the mean of its divisors is an integer number (40014).

2⁷²⁰²⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960336).

720270 is an abundant number, since it is smaller than the sum of its proper divisors (1200402).

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

720270 is a wasteful number, since it uses less digits than its factorization.

720270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 720270 is about 848.6872215369. The cubic root of 720270 is about 89.6392970429.

Adding to 720270 its reverse (72027), we get a palindrome (792297).

It can be divided in two parts, 720 and 270, that added together give a triangular number (990 = T₄₄).

The spelling of 720270 in words is "seven hundred twenty thousand, two hundred seventy", and thus it is an iban number.