71988576 has 48 divisors (see below), whose sum is σ = 206152128. Its totient is φ = 21814400.

The previous prime is 71988559. The next prime is 71988577. The reversal of 71988576 is 67588917.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71988577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33030 + ... + 35141.

It is an arithmetic number, because the mean of its divisors is an integer number (4294836).

Almost surely, 2^71988576 is an apocalyptic number.

It is an amenable number.

71988576 is an abundant number, since it is smaller than the sum of its proper divisors (134163552).

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

71988576 is a wasteful number, since it uses less digits than its factorization.

71988576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68195 (or 68187 counting only the distinct ones).

The product of its digits is 846720, while the sum is 51.

The square root of 71988576 is about 8484.6081818785. The cubic root of 71988576 is about 415.9947607821.

The spelling of 71988576 in words is "seventy-one million, nine hundred eighty-eight thousand, five hundred seventy-six".