71544028 has 12 divisors (see below), whose sum is σ = 125261640. Its totient is φ = 35754992.

The previous prime is 71544023. The next prime is 71544037. The reversal of 71544028 is 82044517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71544023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12750 + ... + 17482.

It is an arithmetic number, because the mean of its divisors is an integer number (10438470).

Almost surely, 2^71544028 is an apocalyptic number.

It is an amenable number.

71544028 is a deficient number, since it is larger than the sum of its proper divisors (53717612).

71544028 is a wasteful number, since it uses less digits than its factorization.

71544028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8516 (or 8514 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 71544028 is about 8458.3702922017. The cubic root of 71544028 is about 415.1367005024.

The spelling of 71544028 in words is "seventy-one million, five hundred forty-four thousand, twenty-eight".