1428398734464 has 128 divisors (see below), whose sum is σ = 4540049539200. Its totient is φ = 439507289088.

The previous prime is 1428398734429. The next prime is 1428398734471. The reversal of 1428398734464 is 4644378938241.

1428398734464 is a `hidden beast` number, since 1 + 4 + 2 + 83 + 98 + 7 + 3 + 4 + 464 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

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, 15851604 + ... + 15941459.

It is an arithmetic number, because the mean of its divisors is an integer number (35469137025).

Almost surely, 2^{1428398734464} is an apocalyptic number.

It is an amenable number.

1428398734464 is an abundant number, since it is smaller than the sum of its proper divisors (3111650804736).

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

1428398734464 is a wasteful number, since it uses less digits than its factorization.

1428398734464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31793099 (or 31793081 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 63.

The spelling of 1428398734464 in words is "one trillion, four hundred twenty-eight billion, three hundred ninety-eight million, seven hundred thirty-four thousand, four hundred sixty-four".