23928945 has 32 divisors (see below), whose sum is σ = 40963968. Its totient is φ = 11885568.

The previous prime is 23928937. The next prime is 23928967. The reversal of 23928945 is 54982932.

It is not a de Polignac number, because 23928945 - 2³ = 23928937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23928897 and 23928906.

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 31 ways as a sum of consecutive naturals, for example, 26847 + ... + 27723.

It is an arithmetic number, because the mean of its divisors is an integer number (1280124).

Almost surely, 2^23928945 is an apocalyptic number.

It is an amenable number.

23928945 is a deficient number, since it is larger than the sum of its proper divisors (17035023).

23928945 is a wasteful number, since it uses less digits than its factorization.

23928945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009.

The product of its digits is 155520, while the sum is 42.

The square root of 23928945 is about 4891.7220894078. The cubic root of 23928945 is about 288.1649686618.

The spelling of 23928945 in words is "twenty-three million, nine hundred twenty-eight thousand, nine hundred forty-five".