1445500240 has 80 divisors (see below), whose sum is σ = 3651909120. Its totient is φ = 530081280.

The previous prime is 1445500237. The next prime is 1445500241. The reversal of 1445500240 is 420055441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445500241) 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, 31782 + ... + 62458.

It is an arithmetic number, because the mean of its divisors is an integer number (45648864).

Almost surely, 2^1445500240 is an apocalyptic number.

1445500240 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 1445500240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1825954560).

1445500240 is an abundant number, since it is smaller than the sum of its proper divisors (2206408880).

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

1445500240 is a wasteful number, since it uses less digits than its factorization.

1445500240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30740 (or 30734 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1445500240 is about 38019.7348754565. The cubic root of 1445500240 is about 1130.6791646435.

Adding to 1445500240 its reverse (420055441), we get a palindrome (1865555681).

The spelling of 1445500240 in words is "one billion, four hundred forty-five million, five hundred thousand, two hundred forty".