1445867520 has 208 divisors, whose sum is σ = 4692066912. Its totient is φ = 380108800.

The previous prime is 1445867503. The next prime is 1445867531. The reversal of 1445867520 is 257685441.

It is a happy number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6205324 + ... + 6205556.

It is an arithmetic number, because the mean of its divisors is an integer number (22558014).

Almost surely, 2^1445867520 is an apocalyptic number.

1445867520 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 1445867520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2346033456).

1445867520 is an abundant number, since it is smaller than the sum of its proper divisors (3246199392).

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

1445867520 is a wasteful number, since it uses less digits than its factorization.

1445867520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 1445867520 is about 38024.5646917884. The cubic root of 1445867520 is about 1130.7749194245.

The spelling of 1445867520 in words is "one billion, four hundred forty-five million, eight hundred sixty-seven thousand, five hundred twenty".