221466232 has 64 divisors (see below), whose sum is σ = 468437760. Its totient is φ = 97459200.

The previous prime is 221466197. The next prime is 221466239. The reversal of 221466232 is 232664122.

221466232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221466232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221466239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234882 + ... + 235822.

It is an arithmetic number, because the mean of its divisors is an integer number (7319340).

Almost surely, 2^221466232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221466232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234218880).

221466232 is an abundant number, since it is smaller than the sum of its proper divisors (246971528).

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

221466232 is a wasteful number, since it uses less digits than its factorization.

221466232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064 (or 1060 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 221466232 is about 14881.7415647497. The cubic root of 221466232 is about 605.0192212093.

The spelling of 221466232 in words is "two hundred twenty-one million, four hundred sixty-six thousand, two hundred thirty-two".