71474552728 has 16 divisors (see below), whose sum is σ = 134067235680. Its totient is φ = 35723289888.

The previous prime is 71474552713. The next prime is 71474552749. The reversal of 71474552728 is 82725547417.

It is a happy number.

It is a super-2 number, since 2×71474552728² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1726576 + ... + 1767487.

It is an arithmetic number, because the mean of its divisors is an integer number (8379202230).

Almost surely, 2^71474552728 is an apocalyptic number.

It is an amenable number.

71474552728 is a deficient number, since it is larger than the sum of its proper divisors (62592682952).

71474552728 is a wasteful number, since it uses less digits than its factorization.

71474552728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496626 (or 3496622 counting only the distinct ones).

The product of its digits is 4390400, while the sum is 52.

The spelling of 71474552728 in words is "seventy-one billion, four hundred seventy-four million, five hundred fifty-two thousand, seven hundred twenty-eight".