1428716705 has 24 divisors (see below), whose sum is σ = 1906703352. Its totient is φ = 1026514944.

The previous prime is 1428716701. The next prime is 1428716711. The reversal of 1428716705 is 5076178241.

It can be written as a sum of positive squares in 12 ways, for example, as 592581649 + 836135056 = 24343^2 + 28916^2 .

It is not a de Polignac number, because 1428716705 - 2² = 1428716701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428716701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8417 + ... + 54113.

It is an arithmetic number, because the mean of its divisors is an integer number (79445973).

Almost surely, 2^1428716705 is an apocalyptic number.

It is an amenable number.

1428716705 is a deficient number, since it is larger than the sum of its proper divisors (477986647).

1428716705 is a wasteful number, since it uses less digits than its factorization.

1428716705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45765 (or 45752 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 1428716705 is about 37798.3690785727. The cubic root of 1428716705 is about 1126.2860565125.

The spelling of 1428716705 in words is "one billion, four hundred twenty-eight million, seven hundred sixteen thousand, seven hundred five".