28569854 has 4 divisors (see below), whose sum is σ = 42854784. Its totient is φ = 14284926.

The previous prime is 28569851. The next prime is 28569857. The reversal of 28569854 is 45896582.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28569851) and next prime (28569857).

It is a junction number, because it is equal to n+sod(n) for n = 28569799 and 28569808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28569851) 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 as a sum of consecutive naturals, namely, 7142462 + ... + 7142465.

It is an arithmetic number, because the mean of its divisors is an integer number (10713696).

Almost surely, 2^28569854 is an apocalyptic number.

28569854 is a deficient number, since it is larger than the sum of its proper divisors (14284930).

28569854 is a wasteful number, since it uses less digits than its factorization.

28569854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14284929.

The product of its digits is 691200, while the sum is 47.

The square root of 28569854 is about 5345.0775485488. The cubic root of 28569854 is about 305.7050927240.

The spelling of 28569854 in words is "twenty-eight million, five hundred sixty-nine thousand, eight hundred fifty-four".