28866429 has 8 divisors (see below), whose sum is σ = 42765120. Its totient is φ = 19244268.

The previous prime is 28866427. The next prime is 28866433. The reversal of 28866429 is 92466882.

It is not a de Polignac number, because 28866429 - 2¹ = 28866427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866427) 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, 534537 + ... + 534590.

It is an arithmetic number, because the mean of its divisors is an integer number (5345640).

Almost surely, 2^28866429 is an apocalyptic number.

It is an amenable number.

28866429 is a deficient number, since it is larger than the sum of its proper divisors (13898691).

28866429 is a wasteful number, since it uses less digits than its factorization.

28866429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069136 (or 1069130 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 28866429 is about 5372.7487378436. The cubic root of 28866429 is about 306.7592640718.

The spelling of 28866429 in words is "twenty-eight million, eight hundred sixty-six thousand, four hundred twenty-nine".