718380 has 72 divisors (see below), whose sum is σ = 2354352. Its totient is φ = 176256.

The previous prime is 718379. The next prime is 718381. The reversal of 718380 is 83817.

718380 = 26² + 27² + ... + 129².

It is an interprime number because it is at equal distance from previous prime (718379) and next prime (718381).

It is not an unprimeable number, because it can be changed into a prime (718381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2187 + ... + 2493.

2⁷¹⁸³⁸⁰ 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 718380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177176).

718380 is an abundant number, since it is smaller than the sum of its proper divisors (1635972).

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

718380 is a wasteful number, since it uses less digits than its factorization.

718380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 718380 is about 847.5730057051. The cubic root of 718380 is about 89.5608233810.

The spelling of 718380 in words is "seven hundred eighteen thousand, three hundred eighty".