23128055 has 4 divisors (see below), whose sum is σ = 27753672. Its totient is φ = 18502440.

The previous prime is 23128031. The next prime is 23128069. The reversal of 23128055 is 55082132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23128055 - 2⁶ = 23127991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312801 + ... + 2312810.

It is an arithmetic number, because the mean of its divisors is an integer number (6938418).

Almost surely, 2^23128055 is an apocalyptic number.

23128055 is a deficient number, since it is larger than the sum of its proper divisors (4625617).

23128055 is an equidigital number, since it uses as much as digits as its factorization.

23128055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625616.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 23128055 is about 4809.1636487023. The cubic root of 23128055 is about 284.9135061218.

The spelling of 23128055 in words is "twenty-three million, one hundred twenty-eight thousand, fifty-five".