1445673472 has 120 divisors (see below), whose sum is σ = 3188678724. Its totient is φ = 652050432.

The previous prime is 1445673451. The next prime is 1445673473. The reversal of 1445673472 is 2743765441.

It can be written as a sum of positive squares in 2 ways, for example, as 1251461376 + 194212096 = 35376^2 + 13936^2 .

It is not an unprimeable number, because it can be changed into a prime (1445673473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21577183 + ... + 21577249.

Almost surely, 2^1445673472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1445673472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1594339362).

1445673472 is an abundant number, since it is smaller than the sum of its proper divisors (1743005252).

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

1445673472 is an frugal number, since it uses more digits than its factorization.

1445673472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 123 counting only the distinct ones).

The product of its digits is 564480, while the sum is 43.

The square root of 1445673472 is about 38022.0129924758. The cubic root of 1445673472 is about 1130.7243305507.

The spelling of 1445673472 in words is "one billion, four hundred forty-five million, six hundred seventy-three thousand, four hundred seventy-two".