221716848 has 80 divisors (see below), whose sum is σ = 592524576. Its totient is φ = 71393280.

The previous prime is 221716843. The next prime is 221716903. The reversal of 221716848 is 848617122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221716843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221886 + ... + 222882.

Almost surely, 2^221716848 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 221716848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296262288).

221716848 is an abundant number, since it is smaller than the sum of its proper divisors (370807728).

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

221716848 is a wasteful number, since it uses less digits than its factorization.

221716848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1156 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 221716848 is about 14890.1594350094. The cubic root of 221716848 is about 605.2473528101.

The spelling of 221716848 in words is "two hundred twenty-one million, seven hundred sixteen thousand, eight hundred forty-eight".