23445021 has 16 divisors (see below), whose sum is σ = 33384960. Its totient is φ = 14602560.

The previous prime is 23445011. The next prime is 23445041. The reversal of 23445021 is 12054432.

It is not a de Polignac number, because 23445021 - 2¹⁷ = 23313949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23445011) 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, 1650 + ... + 7043.

It is an arithmetic number, because the mean of its divisors is an integer number (2086560).

Almost surely, 2^23445021 is an apocalyptic number.

It is an amenable number.

23445021 is a deficient number, since it is larger than the sum of its proper divisors (9939939).

23445021 is a wasteful number, since it uses less digits than its factorization.

23445021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8756.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 23445021 is about 4842.0058859939. The cubic root of 23445021 is about 286.2091685497.

Adding to 23445021 its reverse (12054432), we get a palindrome (35499453).

The spelling of 23445021 in words is "twenty-three million, four hundred forty-five thousand, twenty-one".