71444782 has 4 divisors (see below), whose sum is σ = 107167176. Its totient is φ = 35722390.

The previous prime is 71444773. The next prime is 71444783. The reversal of 71444782 is 28744417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28744417 = 13 ⋅2211109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71444783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17861194 + ... + 17861197.

It is an arithmetic number, because the mean of its divisors is an integer number (26791794).

Almost surely, 2^71444782 is an apocalyptic number.

71444782 is a deficient number, since it is larger than the sum of its proper divisors (35722394).

71444782 is a wasteful number, since it uses less digits than its factorization.

71444782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35722393.

The product of its digits is 50176, while the sum is 37.

The square root of 71444782 is about 8452.5015232178. The cubic root of 71444782 is about 414.9446522210.

The spelling of 71444782 in words is "seventy-one million, four hundred forty-four thousand, seven hundred eighty-two".