1445272000 has 112 divisors (see below), whose sum is σ = 3790114848. Its totient is φ = 544051200.

The previous prime is 1445271977. The next prime is 1445272007. The reversal of 1445272000 is 2725441.

It is a super-2 number, since 2×1445272000² = 4177622307968000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445272007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130687 + ... + 141313.

Almost surely, 2^1445272000 is an apocalyptic number.

1445272000 is a gapful number since it is divisible by the number (10) 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 1445272000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1895057424).

1445272000 is an abundant number, since it is smaller than the sum of its proper divisors (2344842848).

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

1445272000 is a wasteful number, since it uses less digits than its factorization.

1445272000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671 (or 10651 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 1445272000 is about 38016.7331579135. The cubic root of 1445272000 is about 1130.6196512678.

Adding to 1445272000 its reverse (2725441), we get a palindrome (1447997441).

The spelling of 1445272000 in words is "one billion, four hundred forty-five million, two hundred seventy-two thousand".