204420215 has 8 divisors (see below), whose sum is σ = 245541408. Its totient is φ = 163378080.

The previous prime is 204420197. The next prime is 204420241. The reversal of 204420215 is 512024402.

It is a happy number.

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

It is not a de Polignac number, because 204420215 - 2⁸ = 204419959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13916 + ... + 24545.

It is an arithmetic number, because the mean of its divisors is an integer number (30692676).

Almost surely, 2^204420215 is an apocalyptic number.

204420215 is a deficient number, since it is larger than the sum of its proper divisors (41121193).

204420215 is a wasteful number, since it uses less digits than its factorization.

204420215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39529.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 204420215 is about 14297.5597568256. The cubic root of 204420215 is about 589.0804549755.

Adding to 204420215 its reverse (512024402), we get a palindrome (716444617).

The spelling of 204420215 in words is "two hundred four million, four hundred twenty thousand, two hundred fifteen".