220421884 has 12 divisors (see below), whose sum is σ = 385946344. Its totient is φ = 110151504.

The previous prime is 220421879. The next prime is 220421899. The reversal of 220421884 is 488124022.

It is a super-2 number, since 2×220421884² = 97171613892218912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5919 + ... + 21814.

Almost surely, 2^220421884 is an apocalyptic number.

It is an amenable number.

220421884 is a deficient number, since it is larger than the sum of its proper divisors (165524460).

220421884 is a wasteful number, since it uses less digits than its factorization.

220421884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29724 (or 29722 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 220421884 is about 14846.6118693795. The cubic root of 220421884 is about 604.0667111965.

The spelling of 220421884 in words is "two hundred twenty million, four hundred twenty-one thousand, eight hundred eighty-four".