220434215 has 4 divisors (see below), whose sum is σ = 264521064. Its totient is φ = 176347368.

The previous prime is 220434199. The next prime is 220434283. The reversal of 220434215 is 512434022.

It is a happy number.

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 220434215 - 2⁴ = 220434199 is a prime.

It is a super-4 number, since 4×220434215⁴ (a number of 34 digits) contains 4444 as substring.

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 3 ways as a sum of consecutive naturals, for example, 22043417 + ... + 22043426.

It is an arithmetic number, because the mean of its divisors is an integer number (66130266).

Almost surely, 2^220434215 is an apocalyptic number.

220434215 is a deficient number, since it is larger than the sum of its proper divisors (44086849).

220434215 is an equidigital number, since it uses as much as digits as its factorization.

220434215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44086848.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 220434215 is about 14847.0271435059. The cubic root of 220434215 is about 604.0779753650.

Adding to 220434215 its reverse (512434022), we get a palindrome (732868237).

The spelling of 220434215 in words is "two hundred twenty million, four hundred thirty-four thousand, two hundred fifteen".