71196444 has 72 divisors (see below), whose sum is σ = 197713152. Its totient is φ = 21422880.

The previous prime is 71196443. The next prime is 71196449. The reversal of 71196444 is 44469117.

71196444 is a `hidden beast` number, since 7 + 1 + 1 + 9 + 644 + 4 = 666.

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 = 71196399 and 71196408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71196443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63997 + ... + 65099.

It is an arithmetic number, because the mean of its divisors is an integer number (2746016).

Almost surely, 2^71196444 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 71196444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98856576).

71196444 is an abundant number, since it is smaller than the sum of its proper divisors (126516708).

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

71196444 is a wasteful number, since it uses less digits than its factorization.

71196444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287 (or 1282 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 71196444 is about 8437.7985280522. The cubic root of 71196444 is about 414.4633194216.

The spelling of 71196444 in words is "seventy-one million, one hundred ninety-six thousand, four hundred forty-four".