128903763 has 8 divisors (see below), whose sum is σ = 171989248. Its totient is φ = 85877064.

The previous prime is 128903759. The next prime is 128903777. The reversal of 128903763 is 367309821.

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

It is not a de Polignac number, because 128903763 - 2² = 128903759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128903263) 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, 9295 + ... + 18552.

It is an arithmetic number, because the mean of its divisors is an integer number (21498656).

Almost surely, 2^128903763 is an apocalyptic number.

128903763 is a deficient number, since it is larger than the sum of its proper divisors (43085485).

128903763 is a wasteful number, since it uses less digits than its factorization.

128903763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29393.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 128903763 is about 11353.5793034620. The cubic root of 128903763 is about 505.1517538898.

It can be divided in two parts, 12890 and 3763, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 128903763 in words is "one hundred twenty-eight million, nine hundred three thousand, seven hundred sixty-three".