1445257460 has 24 divisors (see below), whose sum is σ = 3058944000. Its totient is φ = 573549984.

The previous prime is 1445257447. The next prime is 1445257493. The reversal of 1445257460 is 647525441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281960 + ... + 287039.

It is an arithmetic number, because the mean of its divisors is an integer number (127456000).

Almost surely, 2^1445257460 is an apocalyptic number.

1445257460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445257460 is an abundant number, since it is smaller than the sum of its proper divisors (1613686540).

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

1445257460 is a wasteful number, since it uses less digits than its factorization.

1445257460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569135 (or 569133 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 1445257460 is about 38016.5419258512. The cubic root of 1445257460 is about 1130.6158597635.

The spelling of 1445257460 in words is "one billion, four hundred forty-five million, two hundred fifty-seven thousand, four hundred sixty".