1445016720 has 320 divisors, whose sum is σ = 5323659264. Its totient is φ = 317399040.

The previous prime is 1445016707. The next prime is 1445016737. The reversal of 1445016720 is 276105441.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5995800 + ... + 5996040.

Almost surely, 2^1445016720 is an apocalyptic number.

1445016720 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 1445016720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2661829632).

1445016720 is an abundant number, since it is smaller than the sum of its proper divisors (3878642544).

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

1445016720 is a wasteful number, since it uses less digits than its factorization.

1445016720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 1445016720 is about 38013.3755407225. The cubic root of 1445016720 is about 1130.5530798128.

The spelling of 1445016720 in words is "one billion, four hundred forty-five million, sixteen thousand, seven hundred twenty".