718240 has 36 divisors (see below), whose sum is σ = 1722546. Its totient is φ = 283008.

The previous prime is 718187. The next prime is 718241. The reversal of 718240 is 42817.

718240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 646416 + 71824 = 804^2 + 268^2 .

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (718241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10687 + ... + 10753.

2⁷¹⁸²⁴⁰ 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 718240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861273).

718240 is an abundant number, since it is smaller than the sum of its proper divisors (1004306).

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

718240 is an equidigital number, since it uses as much as digits as its factorization.

718240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 718240 is about 847.4904129251. The cubic root of 718240 is about 89.5550050445. Note that the first 3 decimals are identical.

The spelling of 718240 in words is "seven hundred eighteen thousand, two hundred forty".