221282448 has 40 divisors (see below), whose sum is σ = 596503488. Its totient is φ = 70553472.

The previous prime is 221282447. The next prime is 221282513. The reversal of 221282448 is 844282122.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (221282447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99115 + ... + 101322.

Almost surely, 2^221282448 is an apocalyptic number.

It is an amenable number.

221282448 is an abundant number, since it is smaller than the sum of its proper divisors (375221040).

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

221282448 is a wasteful number, since it uses less digits than its factorization.

221282448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200471 (or 200465 counting only the distinct ones).

The product of its digits is 16384, while the sum is 33.

The square root of 221282448 is about 14875.5654682436. The cubic root of 221282448 is about 604.8518162682.

The spelling of 221282448 in words is "two hundred twenty-one million, two hundred eighty-two thousand, four hundred forty-eight".