220046420 has 24 divisors (see below), whose sum is σ = 504106848. Its totient is φ = 80016800.

The previous prime is 220046413. The next prime is 220046443. The reversal of 220046420 is 24640022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 220046392 and 220046401.

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 7 ways as a sum of consecutive naturals, for example, 499886 + ... + 500325.

It is an arithmetic number, because the mean of its divisors is an integer number (21004452).

Almost surely, 2^220046420 is an apocalyptic number.

220046420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220046420 is an abundant number, since it is smaller than the sum of its proper divisors (284060428).

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

220046420 is a wasteful number, since it uses less digits than its factorization.

220046420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000231 (or 1000229 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 220046420 is about 14833.9617095367. The cubic root of 220046420 is about 603.7235295960.

Adding to 220046420 its reverse (24640022), we get a palindrome (244686442).

The spelling of 220046420 in words is "two hundred twenty million, forty-six thousand, four hundred twenty".