1444428672 has 64 divisors (see below), whose sum is σ = 3842605200. Its totient is φ = 480743424.

The previous prime is 1444428617. The next prime is 1444428673. The reversal of 1444428672 is 2768244441.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444428673) 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, 288204 + ... + 293172.

Almost surely, 2^1444428672 is an apocalyptic number.

1444428672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1444428672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921302600).

1444428672 is an abundant number, since it is smaller than the sum of its proper divisors (2398176528).

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

1444428672 is an equidigital number, since it uses as much as digits as its factorization.

1444428672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743 (or 5731 counting only the distinct ones).

The product of its digits is 344064, while the sum is 42.

The square root of 1444428672 is about 38005.6400025049. The cubic root of 1444428672 is about 1130.3996998851.

The spelling of 1444428672 in words is "one billion, four hundred forty-four million, four hundred twenty-eight thousand, six hundred seventy-two".