128555337 has 16 divisors (see below), whose sum is σ = 176261888. Its totient is φ = 83296080.

The previous prime is 128555327. The next prime is 128555341. The reversal of 128555337 is 733555821.

It is not a de Polignac number, because 128555337 - 2¹¹ = 128553289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128555295 and 128555304.

It is not an unprimeable number, because it can be changed into a prime (128555327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24858 + ... + 29580.

It is an arithmetic number, because the mean of its divisors is an integer number (11016368).

Almost surely, 2^128555337 is an apocalyptic number.

It is an amenable number.

128555337 is a deficient number, since it is larger than the sum of its proper divisors (47706551).

128555337 is a wasteful number, since it uses less digits than its factorization.

128555337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980.

The product of its digits is 126000, while the sum is 39.

The square root of 128555337 is about 11338.2245964701. The cubic root of 128555337 is about 504.6962026002.

The spelling of 128555337 in words is "one hundred twenty-eight million, five hundred fifty-five thousand, three hundred thirty-seven".