28435785 has 32 divisors (see below), whose sum is σ = 52503552. Its totient is φ = 12872640.

The previous prime is 28435783. The next prime is 28435789. The reversal of 28435785 is 58753482.

It is not a de Polignac number, because 28435785 - 2¹ = 28435783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28435783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9970 + ... + 12500.

It is an arithmetic number, because the mean of its divisors is an integer number (1640736).

Almost surely, 2^28435785 is an apocalyptic number.

It is an amenable number.

28435785 is a deficient number, since it is larger than the sum of its proper divisors (24067767).

28435785 is a wasteful number, since it uses less digits than its factorization.

28435785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653.

The product of its digits is 268800, while the sum is 42.

The square root of 28435785 is about 5332.5214486207. The cubic root of 28435785 is about 305.2261513617.

The spelling of 28435785 in words is "twenty-eight million, four hundred thirty-five thousand, seven hundred eighty-five".