1428728587143 has 64 divisors (see below), whose sum is σ = 2298980135424. Its totient is φ = 777522240000.

The previous prime is 1428728587141. The next prime is 1428728587163. The reversal of 1428728587143 is 3417858278241.

It is not a de Polignac number, because 1428728587143 - 2¹ = 1428728587141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428728587141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 144296493 + ... + 144306393.

It is an arithmetic number, because the mean of its divisors is an integer number (35921564616).

Almost surely, 2^{1428728587143} is an apocalyptic number.

1428728587143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1428728587143 is a deficient number, since it is larger than the sum of its proper divisors (870251548281).

1428728587143 is a wasteful number, since it uses less digits than its factorization.

1428728587143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19056.

The product of its digits is 24084480, while the sum is 60.

The spelling of 1428728587143 in words is "one trillion, four hundred twenty-eight billion, seven hundred twenty-eight million, five hundred eighty-seven thousand, one hundred forty-three".