221629484 has 24 divisors (see below), whose sum is σ = 403284000. Its totient is φ = 106444800.

The previous prime is 221629423. The next prime is 221629549. The reversal of 221629484 is 484926122.

It is a happy number.

221629484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 18284 + ... + 27884.

It is an arithmetic number, because the mean of its divisors is an integer number (16803500).

Almost surely, 2^221629484 is an apocalyptic number.

It is an amenable number.

221629484 is a deficient number, since it is larger than the sum of its proper divisors (181654516).

221629484 is a wasteful number, since it uses less digits than its factorization.

221629484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9833 (or 9831 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 221629484 is about 14887.2255306353. The cubic root of 221629484 is about 605.1678463332.

The spelling of 221629484 in words is "two hundred twenty-one million, six hundred twenty-nine thousand, four hundred eighty-four".