1445273712 has 40 divisors (see below), whose sum is σ = 4148472080. Its totient is φ = 481757760.

The previous prime is 1445273707. The next prime is 1445273719. The reversal of 1445273712 is 2173725441.

It is a super-2 number, since 2×1445273712² = 4177632205196517888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445273719) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1672339 + ... + 1673202.

It is an arithmetic number, because the mean of its divisors is an integer number (103711802).

Almost surely, 2^1445273712 is an apocalyptic number.

1445273712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1445273712 is an abundant number, since it is smaller than the sum of its proper divisors (2703198368).

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

1445273712 is a wasteful number, since it uses less digits than its factorization.

1445273712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345558 (or 3345546 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 1445273712 is about 38016.7556743076. The cubic root of 1445273712 is about 1130.6200976936.

The spelling of 1445273712 in words is "one billion, four hundred forty-five million, two hundred seventy-three thousand, seven hundred twelve".