220029815 has 16 divisors (see below), whose sum is σ = 274125600. Its totient is φ = 169341312.

The previous prime is 220029769. The next prime is 220029829. The reversal of 220029815 is 518920022.

It is a cyclic number.

It is not a de Polignac number, because 220029815 - 2¹⁸ = 219767671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39896 + ... + 45074.

It is an arithmetic number, because the mean of its divisors is an integer number (17132850).

Almost surely, 2^220029815 is an apocalyptic number.

220029815 is a deficient number, since it is larger than the sum of its proper divisors (54095785).

220029815 is a wasteful number, since it uses less digits than its factorization.

220029815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5506.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 220029815 is about 14833.4020035864. The cubic root of 220029815 is about 603.7083432831.

Adding to 220029815 its reverse (518920022), we get a palindrome (738949837).

The spelling of 220029815 in words is "two hundred twenty million, twenty-nine thousand, eight hundred fifteen".