718122720 has 96 divisors (see below), whose sum is σ = 2585253888. Its totient is φ = 164141568.

The previous prime is 718122709. The next prime is 718122733. The reversal of 718122720 is 27221817.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103504 + ... + 110223.

It is an arithmetic number, because the mean of its divisors is an integer number (26929728).

Almost surely, 2^718122720 is an apocalyptic number.

718122720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

718122720 is an abundant number, since it is smaller than the sum of its proper divisors (1867131168).

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

718122720 is a wasteful number, since it uses less digits than its factorization.

718122720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213752 (or 213744 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 718122720 is about 26797.8118509702. The cubic root of 718122720 is about 895.5013035878.

The spelling of 718122720 in words is "seven hundred eighteen million, one hundred twenty-two thousand, seven hundred twenty".