71443944 has 192 divisors, whose sum is σ = 236658240. Its totient is φ = 19906560.

The previous prime is 71443943. The next prime is 71443951. The reversal of 71443944 is 44934417.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 71443899 and 71443908.

It is not an unprimeable number, because it can be changed into a prime (71443943) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 277864 + ... + 278120.

It is an arithmetic number, because the mean of its divisors is an integer number (1232595).

Almost surely, 2^71443944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71443944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118329120).

71443944 is an abundant number, since it is smaller than the sum of its proper divisors (165214296).

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

71443944 is a wasteful number, since it uses less digits than its factorization.

71443944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 286 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 71443944 is about 8452.4519519486. The cubic root of 71443944 is about 414.9430298726.

The spelling of 71443944 in words is "seventy-one million, four hundred forty-three thousand, nine hundred forty-four".