220533845 has 32 divisors (see below), whose sum is σ = 313589760. Its totient is φ = 145696320.

The previous prime is 220533769. The next prime is 220533847. The reversal of 220533845 is 548335022.

It is not a de Polignac number, because 220533845 - 2¹⁰ = 220532821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220533847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476084 + ... + 476546.

It is an arithmetic number, because the mean of its divisors is an integer number (9799680).

Almost surely, 2^220533845 is an apocalyptic number.

It is an amenable number.

220533845 is a deficient number, since it is larger than the sum of its proper divisors (93055915).

220533845 is a wasteful number, since it uses less digits than its factorization.

220533845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 220533845 is about 14850.3819816192. The cubic root of 220533845 is about 604.1689703493.

Adding to 220533845 its reverse (548335022), we get a palindrome (768868867).

The spelling of 220533845 in words is "two hundred twenty million, five hundred thirty-three thousand, eight hundred forty-five".