71740518 has 32 divisors (see below), whose sum is σ = 148760064. Its totient is φ = 23049312.

The previous prime is 71740511. The next prime is 71740549. The reversal of 71740518 is 81504717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71740511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16996 + ... + 20792.

It is an arithmetic number, because the mean of its divisors is an integer number (4648752).

Almost surely, 2^71740518 is an apocalyptic number.

71740518 is an abundant number, since it is smaller than the sum of its proper divisors (77019546).

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

71740518 is a wasteful number, since it uses less digits than its factorization.

71740518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 71740518 is about 8469.9774497929. The cubic root of 71740518 is about 415.5163997865.

The spelling of 71740518 in words is "seventy-one million, seven hundred forty thousand, five hundred eighteen".