23204215 has 4 divisors (see below), whose sum is σ = 27845064. Its totient is φ = 18563368.

The previous prime is 23204183. The next prime is 23204231. The reversal of 23204215 is 51240232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23204215 - 2⁵ = 23204183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23204192 and 23204201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2320417 + ... + 2320426.

It is an arithmetic number, because the mean of its divisors is an integer number (6961266).

Almost surely, 2^23204215 is an apocalyptic number.

23204215 is a deficient number, since it is larger than the sum of its proper divisors (4640849).

23204215 is an equidigital number, since it uses as much as digits as its factorization.

23204215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640848.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 23204215 is about 4817.0753575173. The cubic root of 23204215 is about 285.2259007155.

Adding to 23204215 its reverse (51240232), we get a palindrome (74444447).

The spelling of 23204215 in words is "twenty-three million, two hundred four thousand, two hundred fifteen".