23128424 has 24 divisors (see below), whose sum is σ = 47668530. Its totient is φ = 10512480.

The previous prime is 23128403. The next prime is 23128433. The reversal of 23128424 is 42482132.

It can be written as a sum of positive squares in only one way, i.e., 14822500 + 8305924 = 3850^2 + 2882^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23128393 and 23128402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10979 + ... + 12914.

Almost surely, 2^23128424 is an apocalyptic number.

It is an amenable number.

23128424 is an abundant number, since it is smaller than the sum of its proper divisors (24540106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23128424 is a wasteful number, since it uses less digits than its factorization.

23128424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23921 (or 23906 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 23128424 is about 4809.2020128084. The cubic root of 23128424 is about 284.9150213454.

The spelling of 23128424 in words is "twenty-three million, one hundred twenty-eight thousand, four hundred twenty-four".