128550373 has 6 divisors (see below), whose sum is σ = 149538246. Its totient is φ = 110185992.

The previous prime is 128550343. The next prime is 128550419. The reversal of 128550373 is 373055821.

It can be written as a sum of positive squares in only one way, i.e., 126855169 + 1695204 = 11263^2 + 1302^2 .

It is not a de Polignac number, because 128550373 - 2⁵ = 128550341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128550343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1311690 + ... + 1311787.

It is an arithmetic number, because the mean of its divisors is an integer number (24923041).

Almost surely, 2^128550373 is an apocalyptic number.

It is an amenable number.

128550373 is a deficient number, since it is larger than the sum of its proper divisors (20987873).

128550373 is an equidigital number, since it uses as much as digits as its factorization.

128550373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623491 (or 2623484 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 128550373 is about 11338.0056888326. The cubic root of 128550373 is about 504.6897064504.

The spelling of 128550373 in words is "one hundred twenty-eight million, five hundred fifty thousand, three hundred seventy-three".