23270021 has 8 divisors (see below), whose sum is σ = 23794560. Its totient is φ = 22748752.

The previous prime is 23270011. The next prime is 23270047. The reversal of 23270021 is 12007232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23270021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23270011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18416 + ... + 19638.

It is an arithmetic number, because the mean of its divisors is an integer number (2974320).

Almost surely, 2^23270021 is an apocalyptic number.

It is an amenable number.

23270021 is a deficient number, since it is larger than the sum of its proper divisors (524539).

23270021 is a wasteful number, since it uses less digits than its factorization.

23270021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 23270021 is about 4823.9010147390. The cubic root of 23270021 is about 285.4952750559.

Adding to 23270021 its reverse (12007232), we get a palindrome (35277253).

The spelling of 23270021 in words is "twenty-three million, two hundred seventy thousand, twenty-one".