1305072448728 has 64 divisors (see below), whose sum is σ = 3466408716000. Its totient is φ = 408671327232.

The previous prime is 1305072448633. The next prime is 1305072448733. The reversal of 1305072448728 is 8278442705031.

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 15 ways as a sum of consecutive naturals, for example, 25313493 + ... + 25364996.

Almost surely, 2^{1305072448728} is an apocalyptic number.

It is an amenable number.

1305072448728 is an abundant number, since it is smaller than the sum of its proper divisors (2161336267272).

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

1305072448728 is a wasteful number, since it uses less digits than its factorization.

1305072448728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50678564 (or 50678560 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 1305072448728 in words is "one trillion, three hundred five billion, seventy-two million, four hundred forty-eight thousand, seven hundred twenty-eight".