221984416 has 24 divisors (see below), whose sum is σ = 439659360. Its totient is φ = 110324928.

The previous prime is 221984387. The next prime is 221984437. The reversal of 221984416 is 614489122.

221984416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221984416² = 98554161893722112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15426 + ... + 26113.

It is an arithmetic number, because the mean of its divisors is an integer number (18319140).

Almost surely, 2^221984416 is an apocalyptic number.

It is an amenable number.

221984416 is a deficient number, since it is larger than the sum of its proper divisors (217674944).

221984416 is a wasteful number, since it uses less digits than its factorization.

221984416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41716 (or 41708 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 221984416 is about 14899.1414517750. The cubic root of 221984416 is about 605.4907258687.

The spelling of 221984416 in words is "two hundred twenty-one million, nine hundred eighty-four thousand, four hundred sixteen".