718449172 has 48 divisors (see below), whose sum is σ = 1552521600. Its totient is φ = 289785216.

The previous prime is 718449169. The next prime is 718449181. The reversal of 718449172 is 271944817.

It is a congruent number.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 7923 + ... + 38725.

It is an arithmetic number, because the mean of its divisors is an integer number (32344200).

Almost surely, 2^718449172 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 718449172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776260800).

718449172 is an abundant number, since it is smaller than the sum of its proper divisors (834072428).

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

718449172 is a wasteful number, since it uses less digits than its factorization.

718449172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30845 (or 30829 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 718449172 is about 26803.9021786008. The cubic root of 718449172 is about 895.6369785899.

The spelling of 718449172 in words is "seven hundred eighteen million, four hundred forty-nine thousand, one hundred seventy-two".