220447885 has 16 divisors (see below), whose sum is σ = 309361536. Its totient is φ = 147647808.

The previous prime is 220447867. The next prime is 220447901. The reversal of 220447885 is 588744022.

It is not a de Polignac number, because 220447885 - 2²³ = 212059277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71734 + ... + 74743.

It is an arithmetic number, because the mean of its divisors is an integer number (19335096).

Almost surely, 2^220447885 is an apocalyptic number.

It is an amenable number.

220447885 is a deficient number, since it is larger than the sum of its proper divisors (88913651).

220447885 is a wasteful number, since it uses less digits than its factorization.

220447885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146532.

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 220447885 is about 14847.4874978900. The cubic root of 220447885 is about 604.0904621973.

It can be divided in two parts, 22044 and 7885, that added together give a square (29929 = 173²).

The spelling of 220447885 in words is "two hundred twenty million, four hundred forty-seven thousand, eight hundred eighty-five".