1428765279 has 8 divisors (see below), whose sum is σ = 1909568640. Its totient is φ = 950236056.

The previous prime is 1428765229. The next prime is 1428765383. The reversal of 1428765279 is 9725678241.

It is a happy number.

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

It is not a de Polignac number, because 1428765279 - 2¹⁶ = 1428699743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428765209) 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, 567067 + ... + 569580.

It is an arithmetic number, because the mean of its divisors is an integer number (238696080).

Almost surely, 2^1428765279 is an apocalyptic number.

1428765279 is a deficient number, since it is larger than the sum of its proper divisors (480803361).

1428765279 is a wasteful number, since it uses less digits than its factorization.

1428765279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137069.

The product of its digits is 1693440, while the sum is 51.

The square root of 1428765279 is about 37799.0116140621. The cubic root of 1428765279 is about 1126.2988203209.

The spelling of 1428765279 in words is "one billion, four hundred twenty-eight million, seven hundred sixty-five thousand, two hundred seventy-nine".