420220444 has 24 divisors (see below), whose sum is σ = 844806368. Its totient is φ = 179159040.

The previous prime is 420220441. The next prime is 420220477. The reversal of 420220444 is 444022024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420220441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33477 + ... + 44284.

Almost surely, 2^420220444 is an apocalyptic number.

It is an amenable number.

420220444 is an abundant number, since it is smaller than the sum of its proper divisors (424585924).

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

420220444 is a wasteful number, since it uses less digits than its factorization.

420220444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77965 (or 77963 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 420220444 is about 20499.2791092760. The cubic root of 420220444 is about 749.0182377884.

Adding to 420220444 its reverse (444022024), we get a palindrome (864242468).

The spelling of 420220444 in words is "four hundred twenty million, two hundred twenty thousand, four hundred forty-four".