23205215 has 8 divisors (see below), whose sum is σ = 30377808. Its totient is φ = 16876480.

The previous prime is 23205199. The next prime is 23205233. The reversal of 23205215 is 51250232.

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

It is not a de Polignac number, because 23205215 - 2⁴ = 23205199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 210902 + ... + 211011.

It is an arithmetic number, because the mean of its divisors is an integer number (3797226).

Almost surely, 2^23205215 is an apocalyptic number.

23205215 is a deficient number, since it is larger than the sum of its proper divisors (7172593).

23205215 is a wasteful number, since it uses less digits than its factorization.

23205215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421929.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 23205215 is about 4817.1791538202. The cubic root of 23205215 is about 285.2299979855.

Adding to 23205215 its reverse (51250232), we get a palindrome (74455447).

The spelling of 23205215 in words is "twenty-three million, two hundred five thousand, two hundred fifteen".