71538718 has 16 divisors (see below), whose sum is σ = 108687600. Its totient is φ = 35312256.

The previous prime is 71538659. The next prime is 71538751. The reversal of 71538718 is 81783517.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 78421 + ... + 79327.

It is an arithmetic number, because the mean of its divisors is an integer number (6792975).

Almost surely, 2^71538718 is an apocalyptic number.

71538718 is a deficient number, since it is larger than the sum of its proper divisors (37148882).

71538718 is a wasteful number, since it uses less digits than its factorization.

71538718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its digits is 47040, while the sum is 40.

The square root of 71538718 is about 8458.0563961232. The cubic root of 71538718 is about 415.1264297620.

The spelling of 71538718 in words is "seventy-one million, five hundred thirty-eight thousand, seven hundred eighteen".