128272101 has 8 divisors (see below), whose sum is σ = 173090400. Its totient is φ = 84484272.

The previous prime is 128272093. The next prime is 128272117. The reversal of 128272101 is 101272821.

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

It is not a de Polignac number, because 128272101 - 2³ = 128272093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128272301) 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, 257326 + ... + 257823.

It is an arithmetic number, because the mean of its divisors is an integer number (21636300).

Almost surely, 2^128272101 is an apocalyptic number.

It is an amenable number.

128272101 is a deficient number, since it is larger than the sum of its proper divisors (44818299).

128272101 is an equidigital number, since it uses as much as digits as its factorization.

128272101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515235.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 128272101 is about 11325.7273938586. The cubic root of 128272101 is about 504.3252773944.

The spelling of 128272101 in words is "one hundred twenty-eight million, two hundred seventy-two thousand, one hundred one".