1428712887 has 8 divisors (see below), whose sum is σ = 2177086336. Its totient is φ = 816407352.

The previous prime is 1428712853. The next prime is 1428712921. The reversal of 1428712887 is 7882178241.

It is an interprime number because it is at equal distance from previous prime (1428712853) and next prime (1428712921).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1428712887 - 2²² = 1424518583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428712837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34016953 + ... + 34016994.

It is an arithmetic number, because the mean of its divisors is an integer number (272135792).

Almost surely, 2^1428712887 is an apocalyptic number.

1428712887 is a deficient number, since it is larger than the sum of its proper divisors (748373449).

1428712887 is an equidigital number, since it uses as much as digits as its factorization.

1428712887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68033957.

The product of its digits is 401408, while the sum is 48.

The square root of 1428712887 is about 37798.3185737144. The cubic root of 1428712887 is about 1126.2850532429.

The spelling of 1428712887 in words is "one billion, four hundred twenty-eight million, seven hundred twelve thousand, eight hundred eighty-seven".