128750073 has 8 divisors (see below), whose sum is σ = 171732000. Its totient is φ = 85800768.

The previous prime is 128750059. The next prime is 128750101. The reversal of 128750073 is 370057821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128750073 - 2⁴ = 128750057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128750003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3393 + ... + 16401.

It is an arithmetic number, because the mean of its divisors is an integer number (21466500).

Almost surely, 2^128750073 is an apocalyptic number.

It is an amenable number.

128750073 is a deficient number, since it is larger than the sum of its proper divisors (42981927).

128750073 is a wasteful number, since it uses less digits than its factorization.

128750073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16311.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 128750073 is about 11346.8089346741. The cubic root of 128750073 is about 504.9509124590.

It can be divided in two parts, 1287 and 50073, that added together give a triangular number (51360 = T₃₂₀).

The spelling of 128750073 in words is "one hundred twenty-eight million, seven hundred fifty thousand, seventy-three".