28264885 has 16 divisors (see below), whose sum is σ = 37132992. Its totient is φ = 20483200.

The previous prime is 28264883. The next prime is 28264909. The reversal of 28264885 is 58846282.

It is not a de Polignac number, because 28264885 - 2¹ = 28264883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28264883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18345 + ... + 19825.

It is an arithmetic number, because the mean of its divisors is an integer number (2320812).

Almost surely, 2^28264885 is an apocalyptic number.

It is an amenable number.

28264885 is a deficient number, since it is larger than the sum of its proper divisors (8868107).

28264885 is a wasteful number, since it uses less digits than its factorization.

28264885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844.

The product of its digits is 245760, while the sum is 43.

The square root of 28264885 is about 5316.4729849779. The cubic root of 28264885 is about 304.6134492057.

The spelling of 28264885 in words is "twenty-eight million, two hundred sixty-four thousand, eight hundred eighty-five".