71944744 has 16 divisors (see below), whose sum is σ = 137442420. Its totient is φ = 35293440.

The previous prime is 71944729. The next prime is 71944751. The reversal of 71944744 is 44744917.

It can be written as a sum of positive squares in 2 ways, for example, as 71064900 + 879844 = 8430^2 + 938^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71944697 and 71944706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84417 + ... + 85264.

Almost surely, 2^71944744 is an apocalyptic number.

It is an amenable number.

71944744 is a deficient number, since it is larger than the sum of its proper divisors (65497676).

71944744 is a wasteful number, since it uses less digits than its factorization.

71944744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169740 (or 169736 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 71944744 is about 8482.0247582756. The cubic root of 71944744 is about 415.9103141225.

The spelling of 71944744 in words is "seventy-one million, nine hundred forty-four thousand, seven hundred forty-four".