23105428 has 6 divisors (see below), whose sum is σ = 40434506. Its totient is φ = 11552712.

The previous prime is 23105417. The next prime is 23105429. The reversal of 23105428 is 82450132.

It can be written as a sum of positive squares in only one way, i.e., 20539024 + 2566404 = 4532^2 + 1602^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23105429) by changing a digit.

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 as a sum of consecutive naturals, namely, 2888175 + ... + 2888182.

Almost surely, 2^23105428 is an apocalyptic number.

It is an amenable number.

23105428 is a deficient number, since it is larger than the sum of its proper divisors (17329078).

23105428 is a wasteful number, since it uses less digits than its factorization.

23105428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776361 (or 5776359 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 23105428 is about 4806.8105849929. The cubic root of 23105428 is about 284.8205621280.

The spelling of 23105428 in words is "twenty-three million, one hundred five thousand, four hundred twenty-eight".