1428729443715 has 32 divisors (see below), whose sum is σ = 2613183367680. Its totient is φ = 652971078144.

The previous prime is 1428729443683. The next prime is 1428729443717. The reversal of 1428729443715 is 5173449278241.

It is not a de Polignac number, because 1428729443715 - 2⁵ = 1428729443683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1428729443717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1266630 + ... + 2112299.

It is an arithmetic number, because the mean of its divisors is an integer number (81661980240).

Almost surely, 2^{1428729443715} is an apocalyptic number.

1428729443715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1428729443715 is a deficient number, since it is larger than the sum of its proper divisors (1184453923965).

1428729443715 is a wasteful number, since it uses less digits than its factorization.

1428729443715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382971.

The product of its digits is 13547520, while the sum is 57.

The spelling of 1428729443715 in words is "one trillion, four hundred twenty-eight billion, seven hundred twenty-nine million, four hundred forty-three thousand, seven hundred fifteen".