1428872859 has 8 divisors (see below), whose sum is σ = 2116848720. Its totient is φ = 952581888.

The previous prime is 1428872849. The next prime is 1428872867. The reversal of 1428872859 is 9582788241.

It is not a de Polignac number, because 1428872859 - 2²⁵ = 1395318427 is a prime.

It is a super-3 number, since 3×1428872859³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1428872849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26460582 + ... + 26460635.

It is an arithmetic number, because the mean of its divisors is an integer number (264606090).

Almost surely, 2^1428872859 is an apocalyptic number.

1428872859 is a deficient number, since it is larger than the sum of its proper divisors (687975861).

1428872859 is an equidigital number, since it uses as much as digits as its factorization.

1428872859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52921226 (or 52921220 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 1428872859 is about 37800.4346403583. The cubic root of 1428872859 is about 1126.3270881285.

The spelling of 1428872859 in words is "one billion, four hundred twenty-eight million, eight hundred seventy-two thousand, eight hundred fifty-nine".