71745384 has 16 divisors (see below), whose sum is σ = 179363520. Its totient is φ = 23915120.

The previous prime is 71745383. The next prime is 71745397. The reversal of 71745384 is 48354717.

It is not an unprimeable number, because it can be changed into a prime (71745383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1494672 + ... + 1494719.

It is an arithmetic number, because the mean of its divisors is an integer number (11210220).

Almost surely, 2^71745384 is an apocalyptic number.

It is an amenable number.

71745384 is an abundant number, since it is smaller than the sum of its proper divisors (107618136).

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

71745384 is a wasteful number, since it uses less digits than its factorization.

71745384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2989400 (or 2989396 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 71745384 is about 8470.2646948015. The cubic root of 71745384 is about 415.5257940923.

The spelling of 71745384 in words is "seventy-one million, seven hundred forty-five thousand, three hundred eighty-four".