23450021 has 8 divisors (see below), whose sum is σ = 28376640. Its totient is φ = 18917568.

The previous prime is 23450017. The next prime is 23450027. The reversal of 23450021 is 12005432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23450021 - 2² = 23450017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23450027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98411 + ... + 98648.

It is an arithmetic number, because the mean of its divisors is an integer number (3547080).

Almost surely, 2^23450021 is an apocalyptic number.

It is an amenable number.

23450021 is a deficient number, since it is larger than the sum of its proper divisors (4926619).

23450021 is a wasteful number, since it uses less digits than its factorization.

23450021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197083.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 23450021 is about 4842.5221734134. The cubic root of 23450021 is about 286.2295132265.

Adding to 23450021 its reverse (12005432), we get a palindrome (35455453).

The spelling of 23450021 in words is "twenty-three million, four hundred fifty thousand, twenty-one".