720416 has 24 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 351808.

The previous prime is 720413. The next prime is 720439. The reversal of 720416 is 614027.

720416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (720413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265 + ... + 1743.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2⁷²⁰⁴¹⁶ 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 720416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

720416 is an abundant number, since it is smaller than the sum of its proper divisors (731104).

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

720416 is a wasteful number, since it uses less digits than its factorization.

720416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 720416 is about 848.7732323772. The cubic root of 720416 is about 89.6453533149.

The spelling of 720416 in words is "seven hundred twenty thousand, four hundred sixteen".