220420446 has 8 divisors (see below), whose sum is σ = 440840904. Its totient is φ = 73473480.

The previous prime is 220420441. The next prime is 220420471. The reversal of 220420446 is 644024022.

It is a sphenic number, since it is the product of 3 distinct primes.

220420446 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220420441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18368365 + ... + 18368376.

It is an arithmetic number, because the mean of its divisors is an integer number (55105113).

Almost surely, 2^220420446 is an apocalyptic number.

220420446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220420446 is a wasteful number, since it uses less digits than its factorization.

220420446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36736746.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 220420446 is about 14846.5634407428. The cubic root of 220420446 is about 604.0653975795.

Adding to 220420446 its reverse (644024022), we get a palindrome (864444468).

The spelling of 220420446 in words is "two hundred twenty million, four hundred twenty thousand, four hundred forty-six".