1221448 has 8 divisors (see below), whose sum is σ = 2290230. Its totient is φ = 610720.

The previous prime is 1221443. The next prime is 1221449. The reversal of 1221448 is 8441221.

It can be written as a sum of positive squares in only one way, i.e., 887364 + 334084 = 942^2 + 578^2 .

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

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 (1221443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76333 + ... + 76348.

2^1221448 is an apocalyptic number.

It is an amenable number.

1221448 is a deficient number, since it is larger than the sum of its proper divisors (1068782).

1221448 is a wasteful number, since it uses less digits than its factorization.

1221448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152687 (or 152683 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The square root of 1221448 is about 1105.1913861409. The cubic root of 1221448 is about 106.8952303735.

Adding to 1221448 its reverse (8441221), we get a palindrome (9662669).

The spelling of 1221448 in words is "one million, two hundred twenty-one thousand, four hundred forty-eight".