1445771040 has 96 divisors (see below), whose sum is σ = 5204787840. Its totient is φ = 330461184.

The previous prime is 1445771039. The next prime is 1445771071. The reversal of 1445771040 is 401775441.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 1445770992 and 1445771010.

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, 211785 + ... + 218504.

It is an arithmetic number, because the mean of its divisors is an integer number (54216540).

Almost surely, 2^1445771040 is an apocalyptic number.

1445771040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445771040 is an abundant number, since it is smaller than the sum of its proper divisors (3759016800).

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

1445771040 is a wasteful number, since it uses less digits than its factorization.

1445771040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430314 (or 430306 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 1445771040 is about 38023.2960170472. The cubic root of 1445771040 is about 1130.7497673757.

The spelling of 1445771040 in words is "one billion, four hundred forty-five million, seven hundred seventy-one thousand, forty".