1428587144 has 16 divisors (see below), whose sum is σ = 2679093900. Its totient is φ = 714162112.

The previous prime is 1428587141. The next prime is 1428587159. The reversal of 1428587144 is 4417858241.

It can be written as a sum of positive squares in 2 ways, for example, as 1022080900 + 406506244 = 31970^2 + 20162^2 .

It is a super-2 number, since 2×1428587144² = 4081722456004153472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1428587095 and 1428587104.

It is not an unprimeable number, because it can be changed into a prime (1428587141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41954 + ... + 67950.

Almost surely, 2^1428587144 is an apocalyptic number.

It is an amenable number.

1428587144 is a deficient number, since it is larger than the sum of its proper divisors (1250506756).

1428587144 is a wasteful number, since it uses less digits than its factorization.

1428587144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32872 (or 32868 counting only the distinct ones).

The product of its digits is 286720, while the sum is 44.

The square root of 1428587144 is about 37796.6551959297. The cubic root of 1428587144 is about 1126.2520103044.

The spelling of 1428587144 in words is "one billion, four hundred twenty-eight million, five hundred eighty-seven thousand, one hundred forty-four".