221474208 has 48 divisors (see below), whose sum is σ = 583583616. Its totient is φ = 73543680.

The previous prime is 221474179. The next prime is 221474219. The reversal of 221474208 is 802474122.

221474208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21760 + ... + 30272.

It is an arithmetic number, because the mean of its divisors is an integer number (12157992).

Almost surely, 2^221474208 is an apocalyptic number.

It is an amenable number.

221474208 is an abundant number, since it is smaller than the sum of its proper divisors (362109408).

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

221474208 is a wasteful number, since it uses less digits than its factorization.

221474208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8797 (or 8789 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 221474208 is about 14882.0095417252. The cubic root of 221474208 is about 605.0264842810.

The spelling of 221474208 in words is "two hundred twenty-one million, four hundred seventy-four thousand, two hundred eight".