1428895978192 has 20 divisors (see below), whose sum is σ = 2771202854880. Its totient is φ = 713746854368.

The previous prime is 1428895978171. The next prime is 1428895978193. The reversal of 1428895978192 is 2918795988241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428895978193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43804108 + ... + 43836715.

It is an arithmetic number, because the mean of its divisors is an integer number (138560142744).

Almost surely, 2^{1428895978192} is an apocalyptic number.

It is an amenable number.

1428895978192 is a deficient number, since it is larger than the sum of its proper divisors (1342306876688).

1428895978192 is a wasteful number, since it uses less digits than its factorization.

1428895978192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87641850 (or 87641844 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 73.

The spelling of 1428895978192 in words is "one trillion, four hundred twenty-eight billion, eight hundred ninety-five million, nine hundred seventy-eight thousand, one hundred ninety-two".