128380903 has 8 divisors (see below), whose sum is σ = 147352608. Its totient is φ = 109567104.

The previous prime is 128380867. The next prime is 128380921. The reversal of 128380903 is 309083821.

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 128380903 - 2²⁵ = 94826471 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 (128380943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37726 + ... + 40987.

It is an arithmetic number, because the mean of its divisors is an integer number (18419076).

Almost surely, 2^128380903 is an apocalyptic number.

128380903 is a deficient number, since it is larger than the sum of its proper divisors (18971705).

128380903 is an equidigital number, since it uses as much as digits as its factorization.

128380903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78953.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 128380903 is about 11330.5296875301. The cubic root of 128380903 is about 504.4678287662.

The spelling of 128380903 in words is "one hundred twenty-eight million, three hundred eighty thousand, nine hundred three".