128590441 has 16 divisors (see below), whose sum is σ = 149990400. Its totient is φ = 107962128.

The previous prime is 128590409. The next prime is 128590463. The reversal of 128590441 is 144095821.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 128590441 - 2⁵ = 128590409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128590397 and 128590406.

It is not an unprimeable number, because it can be changed into a prime (128590471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207430 + ... + 208048.

It is an arithmetic number, because the mean of its divisors is an integer number (9374400).

Almost surely, 2^128590441 is an apocalyptic number.

It is an amenable number.

128590441 is a deficient number, since it is larger than the sum of its proper divisors (21399959).

128590441 is an equidigital number, since it uses as much as digits as its factorization.

128590441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 128590441 is about 11339.7725285827. The cubic root of 128590441 is about 504.7421367573.

The spelling of 128590441 in words is "one hundred twenty-eight million, five hundred ninety thousand, four hundred forty-one".