1444621228 has 24 divisors (see below), whose sum is σ = 2551046400. Its totient is φ = 715774800.

The previous prime is 1444621219. The next prime is 1444621259. The reversal of 1444621228 is 8221264441.

It is a junction number, because it is equal to n+sod(n) for n = 1444621193 and 1444621202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264873 + ... + 270271.

It is an arithmetic number, because the mean of its divisors is an integer number (106293600).

Almost surely, 2^1444621228 is an apocalyptic number.

It is an amenable number.

1444621228 is a deficient number, since it is larger than the sum of its proper divisors (1106425172).

1444621228 is a wasteful number, since it uses less digits than its factorization.

1444621228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5997 (or 5995 counting only the distinct ones).

The product of its digits is 24576, while the sum is 34.

The square root of 1444621228 is about 38008.1731736741. The cubic root of 1444621228 is about 1130.4499286427.

Adding to 1444621228 its reverse (8221264441), we get a palindrome (9665885669).

The spelling of 1444621228 in words is "one billion, four hundred forty-four million, six hundred twenty-one thousand, two hundred twenty-eight".