1428428705 has 32 divisors (see below), whose sum is σ = 1915850880. Its totient is φ = 1013575680.

The previous prime is 1428428663. The next prime is 1428428737. The reversal of 1428428705 is 5078248241.

It is not a de Polignac number, because 1428428705 - 2⁶ = 1428428641 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 561326 + ... + 563864.

It is an arithmetic number, because the mean of its divisors is an integer number (59870340).

Almost surely, 2^1428428705 is an apocalyptic number.

It is an amenable number.

1428428705 is a deficient number, since it is larger than the sum of its proper divisors (487422175).

1428428705 is a wasteful number, since it uses less digits than its factorization.

1428428705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801.

The product of its (nonzero) digits is 143360, while the sum is 41.

The square root of 1428428705 is about 37794.5591983820. The cubic root of 1428428705 is about 1126.2103726999.

The spelling of 1428428705 in words is "one billion, four hundred twenty-eight million, four hundred twenty-eight thousand, seven hundred five".