23416221 has 8 divisors (see below), whose sum is σ = 31246240. Its totient is φ = 15598512.

The previous prime is 23416219. The next prime is 23416229. The reversal of 23416221 is 12261432.

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

It is not a de Polignac number, because 23416221 - 2¹ = 23416219 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 (23416229) 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, 3186 + ... + 7548.

It is an arithmetic number, because the mean of its divisors is an integer number (3905780).

Almost surely, 2^23416221 is an apocalyptic number.

It is an amenable number.

23416221 is a deficient number, since it is larger than the sum of its proper divisors (7830019).

23416221 is a wasteful number, since it uses less digits than its factorization.

23416221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155.

The product of its digits is 576, while the sum is 21.

The square root of 23416221 is about 4839.0309980408. The cubic root of 23416221 is about 286.0919268614.

Adding to 23416221 its reverse (12261432), we get a palindrome (35677653).

The spelling of 23416221 in words is "twenty-three million, four hundred sixteen thousand, two hundred twenty-one".