220021448 has 8 divisors (see below), whose sum is σ = 412540230. Its totient is φ = 110010720.

The previous prime is 220021447. The next prime is 220021469. The reversal of 220021448 is 844120022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 214271044 + 5750404 = 14638^2 + 2398^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (220021441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13751333 + ... + 13751348.

Almost surely, 2^220021448 is an apocalyptic number.

It is an amenable number.

220021448 is a deficient number, since it is larger than the sum of its proper divisors (192518782).

220021448 is a wasteful number, since it uses less digits than its factorization.

220021448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27502687 (or 27502683 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 220021448 is about 14833.1199685029. The cubic root of 220021448 is about 603.7006908478.

The spelling of 220021448 in words is "two hundred twenty million, twenty-one thousand, four hundred forty-eight".