220532915 has 16 divisors (see below), whose sum is σ = 273666816. Its totient is φ = 170428800.

The previous prime is 220532911. The next prime is 220532971. The reversal of 220532915 is 519235022.

It is not a de Polignac number, because 220532915 - 2² = 220532911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220532911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126389 + ... + 128121.

It is an arithmetic number, because the mean of its divisors is an integer number (17104176).

Almost surely, 2^220532915 is an apocalyptic number.

220532915 is a deficient number, since it is larger than the sum of its proper divisors (53133901).

220532915 is a wasteful number, since it uses less digits than its factorization.

220532915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 220532915 is about 14850.3506692603. The cubic root of 220532915 is about 604.1681210799.

Adding to 220532915 its reverse (519235022), we get a palindrome (739767937).

The spelling of 220532915 in words is "two hundred twenty million, five hundred thirty-two thousand, nine hundred fifteen".