28335609 has 32 divisors (see below), whose sum is σ = 44328960. Its totient is φ = 17853264.

The previous prime is 28335589. The next prime is 28335611. The reversal of 28335609 is 90653382.

It is not a de Polignac number, because 28335609 - 2¹¹ = 28333561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28335649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63742 + ... + 64184.

It is an arithmetic number, because the mean of its divisors is an integer number (1385280).

Almost surely, 2^28335609 is an apocalyptic number.

It is an amenable number.

28335609 is a deficient number, since it is larger than the sum of its proper divisors (15993351).

28335609 is a wasteful number, since it uses less digits than its factorization.

28335609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 28335609 is about 5323.1202315935. The cubic root of 28335609 is about 304.8673040969.

The spelling of 28335609 in words is "twenty-eight million, three hundred thirty-five thousand, six hundred nine".