71728758 has 24 divisors (see below), whose sum is σ = 156842400. Its totient is φ = 23689584.

The previous prime is 71728753. The next prime is 71728759. The reversal of 71728758 is 85782717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71728751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16318 + ... + 20241.

It is an arithmetic number, because the mean of its divisors is an integer number (6535100).

Almost surely, 2^71728758 is an apocalyptic number.

71728758 is an abundant number, since it is smaller than the sum of its proper divisors (85113642).

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

71728758 is a wasteful number, since it uses less digits than its factorization.

71728758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36676 (or 36673 counting only the distinct ones).

The product of its digits is 219520, while the sum is 45.

The square root of 71728758 is about 8469.2832046166. The cubic root of 71728758 is about 415.4936941616.

The spelling of 71728758 in words is "seventy-one million, seven hundred twenty-eight thousand, seven hundred fifty-eight".