73458552728 has 32 divisors (see below), whose sum is σ = 150444801360. Its totient is φ = 33348324480.

The previous prime is 73458552721. The next prime is 73458552743. The reversal of 73458552728 is 82725585437.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73458552721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 453551 + ... + 593822.

Almost surely, 2^73458552728 is an apocalyptic number.

It is an amenable number.

73458552728 is an abundant number, since it is smaller than the sum of its proper divisors (76986248632).

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

73458552728 is a wasteful number, since it uses less digits than its factorization.

73458552728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048187 (or 1048183 counting only the distinct ones).

The product of its digits is 18816000, while the sum is 56.

The spelling of 73458552728 in words is "seventy-three billion, four hundred fifty-eight million, five hundred fifty-two thousand, seven hundred twenty-eight".