71168544 has 60 divisors (see below), whose sum is σ = 209312334. Its totient is φ = 23721984.

The previous prime is 71168533. The next prime is 71168549. The reversal of 71168544 is 44586117.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 70358544 + 810000 = 8388^2 + 900^2 .

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 = 71168499 and 71168508.

It is not an unprimeable number, because it can be changed into a prime (71168549) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11137 + ... + 16320.

Almost surely, 2^71168544 is an apocalyptic number.

It is an amenable number.

71168544 is an abundant number, since it is smaller than the sum of its proper divisors (138143790).

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

71168544 is a wasteful number, since it uses less digits than its factorization.

71168544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27479 (or 27462 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 71168544 is about 8436.1450912132. The cubic root of 71168544 is about 414.4091732837.

The spelling of 71168544 in words is "seventy-one million, one hundred sixty-eight thousand, five hundred forty-four".