128430287 has 8 divisors (see below), whose sum is σ = 131486160. Its totient is φ = 125409600.

The previous prime is 128430271. The next prime is 128430307. The reversal of 128430287 is 782034821.

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

It is a cyclic number.

It is not a de Polignac number, because 128430287 - 2⁴ = 128430271 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 (128430217) 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 7 ways as a sum of consecutive naturals, for example, 1337 + ... + 16082.

It is an arithmetic number, because the mean of its divisors is an integer number (16435770).

Almost surely, 2^128430287 is an apocalyptic number.

128430287 is a deficient number, since it is larger than the sum of its proper divisors (3055873).

128430287 is a wasteful number, since it uses less digits than its factorization.

128430287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17593.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 128430287 is about 11332.7087229841. The cubic root of 128430287 is about 504.5325046512.

The spelling of 128430287 in words is "one hundred twenty-eight million, four hundred thirty thousand, two hundred eighty-seven".