75226998728 has 60 divisors (see below), whose sum is σ = 164632458315. Its totient is φ = 32223851184.

The previous prime is 75226998719. The next prime is 75226998761. The reversal of 75226998728 is 82789962257.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 37613499364 + 37613499364 = 193942^2 + 193942^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=193942.

It is a Duffinian 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 14 ways as a sum of consecutive naturals, for example, 38011643 + ... + 38013621.

Almost surely, 2^75226998728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75226998728

75226998728 is an abundant number, since it is smaller than the sum of its proper divisors (89405459587).

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

75226998728 is an frugal number, since it uses more digits than its factorization.

75226998728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992 (or 1988 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 65.

The spelling of 75226998728 in words is "seventy-five billion, two hundred twenty-six million, nine hundred ninety-eight thousand, seven hundred twenty-eight".