128023801 has 8 divisors (see below), whose sum is σ = 131280800. Its totient is φ = 124806528.

The previous prime is 128023793. The next prime is 128023829. The reversal of 128023801 is 108320821.

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

It is not a de Polignac number, because 128023801 - 2³ = 128023793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128023871) 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, 3351 + ... + 16348.

It is an arithmetic number, because the mean of its divisors is an integer number (16410100).

Almost surely, 2^128023801 is an apocalyptic number.

It is an amenable number.

128023801 is a deficient number, since it is larger than the sum of its proper divisors (3256999).

128023801 is an equidigital number, since it uses as much as digits as its factorization.

128023801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19863.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 128023801 is about 11314.7603156231. The cubic root of 128023801 is about 503.9996548771. Note that the first 3 decimals are identical.

The spelling of 128023801 in words is "one hundred twenty-eight million, twenty-three thousand, eight hundred one".