128900503 has 8 divisors (see below), whose sum is σ = 137910320. Its totient is φ = 120113280.

The previous prime is 128900501. The next prime is 128900521. The reversal of 128900503 is 305009821.

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 128900503 - 2¹ = 128900501 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 (128900501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54450 + ... + 56767.

It is an arithmetic number, because the mean of its divisors is an integer number (17238790).

Almost surely, 2^128900503 is an apocalyptic number.

128900503 is a deficient number, since it is larger than the sum of its proper divisors (9009817).

128900503 is a wasteful number, since it uses less digits than its factorization.

128900503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111297.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 128900503 is about 11353.4357354943. The cubic root of 128900503 is about 505.1474953934.

The spelling of 128900503 in words is "one hundred twenty-eight million, nine hundred thousand, five hundred three".