128430577 has 4 divisors (see below), whose sum is σ = 140106096. Its totient is φ = 116755060.

The previous prime is 128430571. The next prime is 128430581. The reversal of 128430577 is 775034821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128430577 - 2¹⁵ = 128397809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128430571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5837743 + ... + 5837764.

It is an arithmetic number, because the mean of its divisors is an integer number (35026524).

Almost surely, 2^128430577 is an apocalyptic number.

It is an amenable number.

128430577 is a deficient number, since it is larger than the sum of its proper divisors (11675519).

128430577 is a wasteful number, since it uses less digits than its factorization.

128430577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11675518.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 128430577 is about 11332.7215177997. The cubic root of 128430577 is about 504.5328844015.

The spelling of 128430577 in words is "one hundred twenty-eight million, four hundred thirty thousand, five hundred seventy-seven".