220246155 has 64 divisors (see below), whose sum is σ = 409795200. Its totient is φ = 112089600.

The previous prime is 220246139. The next prime is 220246177. The reversal of 220246155 is 551642022.

220246155 is a `hidden beast` number, since 2 + 20 + 24 + 615 + 5 = 666.

It is not a de Polignac number, because 220246155 - 2⁴ = 220246139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 395137 + ... + 395693.

It is an arithmetic number, because the mean of its divisors is an integer number (6403050).

Almost surely, 2^220246155 is an apocalyptic number.

220246155 is a deficient number, since it is larger than the sum of its proper divisors (189549045).

220246155 is a wasteful number, since it uses less digits than its factorization.

220246155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 220246155 is about 14840.6925377490. The cubic root of 220246155 is about 603.9061399332.

Adding to 220246155 its reverse (551642022), we get a palindrome (771888177).

The spelling of 220246155 in words is "two hundred twenty million, two hundred forty-six thousand, one hundred fifty-five".