71718500 has 96 divisors (see below), whose sum is σ = 185063424. Its totient is φ = 23760000.

The previous prime is 71718499. The next prime is 71718503. The reversal of 71718500 is 581717.

It is not an unprimeable number, because it can be changed into a prime (71718503) 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 31 ways as a sum of consecutive naturals, for example, 108170 + ... + 108830.

It is an arithmetic number, because the mean of its divisors is an integer number (1927744).

Almost surely, 2^71718500 is an apocalyptic number.

71718500 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71718500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92531712).

71718500 is an abundant number, since it is smaller than the sum of its proper divisors (113344924).

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

71718500 is a wasteful number, since it uses less digits than its factorization.

71718500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 71718500 is about 8468.6775827162. The cubic root of 71718500 is about 415.4738864971.

The spelling of 71718500 in words is "seventy-one million, seven hundred eighteen thousand, five hundred".