1428895978794 has 48 divisors (see below), whose sum is σ = 3238929832320. Its totient is φ = 454794765120.

The previous prime is 1428895978793. The next prime is 1428895978819. The reversal of 1428895978794 is 4978795988241.

1428895978794 is a `hidden beast` number, since 1 + 4 + 288 + 95 + 97 + 87 + 94 = 666.

It is not an unprimeable number, because it can be changed into a prime (1428895978793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20562904 + ... + 20632275.

It is an arithmetic number, because the mean of its divisors is an integer number (67477704840).

Almost surely, 2^{1428895978794} is an apocalyptic number.

1428895978794 is an abundant number, since it is smaller than the sum of its proper divisors (1810033853526).

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

1428895978794 is a wasteful number, since it uses less digits than its factorization.

1428895978794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41195275 (or 41195272 counting only the distinct ones).

The product of its digits is 2926264320, while the sum is 81.

The spelling of 1428895978794 in words is "one trillion, four hundred twenty-eight billion, eight hundred ninety-five million, nine hundred seventy-eight thousand, seven hundred ninety-four".