23428005 has 16 divisors (see below), whose sum is σ = 37567104. Its totient is φ = 12467520.

The previous prime is 23428001. The next prime is 23428019. The reversal of 23428005 is 50082432.

It is not a de Polignac number, because 23428005 - 2² = 23428001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23428001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6672 + ... + 9558.

It is an arithmetic number, because the mean of its divisors is an integer number (2347944).

Almost surely, 2^23428005 is an apocalyptic number.

It is an amenable number.

23428005 is a deficient number, since it is larger than the sum of its proper divisors (14139099).

23428005 is a wasteful number, since it uses less digits than its factorization.

23428005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 23428005 is about 4840.2484440367. The cubic root of 23428005 is about 286.1399098656.

The spelling of 23428005 in words is "twenty-three million, four hundred twenty-eight thousand, five".