128433087 has 16 divisors (see below), whose sum is σ = 190510080. Its totient is φ = 85514616.

The previous prime is 128433023. The next prime is 128433089. The reversal of 128433087 is 780334821.

It is not a de Polignac number, because 128433087 - 2⁶ = 128433023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128433089) 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, 23058 + ... + 28080.

It is an arithmetic number, because the mean of its divisors is an integer number (11906880).

Almost surely, 2^128433087 is an apocalyptic number.

128433087 is a deficient number, since it is larger than the sum of its proper divisors (62076993).

128433087 is an equidigital number, since it uses as much as digits as its factorization.

128433087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5979 (or 5973 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 128433087 is about 11332.8322585310. The cubic root of 128433087 is about 504.5361711819.

The spelling of 128433087 in words is "one hundred twenty-eight million, four hundred thirty-three thousand, eighty-seven".