23128478 has 32 divisors (see below), whose sum is σ = 37822464. Its totient is φ = 10577952.

The previous prime is 23128471. The next prime is 23128481. The reversal of 23128478 is 87482132.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23128471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182051 + ... + 182177.

It is an arithmetic number, because the mean of its divisors is an integer number (1181952).

Almost surely, 2^23128478 is an apocalyptic number.

23128478 is a deficient number, since it is larger than the sum of its proper divisors (14693986).

23128478 is a wasteful number, since it uses less digits than its factorization.

23128478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296.

The product of its digits is 21504, while the sum is 35.

The square root of 23128478 is about 4809.2076270421. The cubic root of 23128478 is about 284.9152430841.

The spelling of 23128478 in words is "twenty-three million, one hundred twenty-eight thousand, four hundred seventy-eight".