1445662240 has 192 divisors, whose sum is σ = 3950456832. Its totient is φ = 494771200.

The previous prime is 1445662213. The next prime is 1445662271. The reversal of 1445662240 is 422665441.

It is a junction number, because it is equal to n+sod(n) for n = 1445662196 and 1445662205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2873829 + ... + 2874331.

It is an arithmetic number, because the mean of its divisors is an integer number (20575296).

Almost surely, 2^1445662240 is an apocalyptic number.

1445662240 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 1445662240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975228416).

1445662240 is an abundant number, since it is smaller than the sum of its proper divisors (2504794592).

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

1445662240 is a wasteful number, since it uses less digits than its factorization.

1445662240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 1445662240 is about 38021.8652882785. The cubic root of 1445662240 is about 1130.7214021972.

The spelling of 1445662240 in words is "one billion, four hundred forty-five million, six hundred sixty-two thousand, two hundred forty".