128737273 has 8 divisors (see below), whose sum is σ = 147210048. Its totient is φ = 110284944.

The previous prime is 128737223. The next prime is 128737283. The reversal of 128737273 is 372737821.

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

It is not a de Polignac number, because 128737273 - 2²¹ = 126640121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128737223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12390 + ... + 20272.

It is an arithmetic number, because the mean of its divisors is an integer number (18401256).

Almost surely, 2^128737273 is an apocalyptic number.

It is an amenable number.

128737273 is a deficient number, since it is larger than the sum of its proper divisors (18472775).

128737273 is an equidigital number, since it uses as much as digits as its factorization.

128737273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223.

The product of its digits is 98784, while the sum is 40.

The square root of 128737273 is about 11346.2448854235. The cubic root of 128737273 is about 504.9341782656.

The spelling of 128737273 in words is "one hundred twenty-eight million, seven hundred thirty-seven thousand, two hundred seventy-three".