71443738 has 8 divisors (see below), whose sum is σ = 107411040. Its totient is φ = 35640060.

The previous prime is 71443717. The next prime is 71443739. The reversal of 71443738 is 83734417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 71443697 and 71443706.

It is not an unprimeable number, because it can be changed into a prime (71443739) 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, 39808 + ... + 41563.

It is an arithmetic number, because the mean of its divisors is an integer number (13426380).

Almost surely, 2^71443738 is an apocalyptic number.

71443738 is a deficient number, since it is larger than the sum of its proper divisors (35967302).

71443738 is a wasteful number, since it uses less digits than its factorization.

71443738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81812.

The product of its digits is 56448, while the sum is 37.

The square root of 71443738 is about 8452.4397661267. The cubic root of 71443738 is about 414.9426310595.

The spelling of 71443738 in words is "seventy-one million, four hundred forty-three thousand, seven hundred thirty-eight".