28541868 has 24 divisors (see below), whose sum is σ = 67211760. Its totient is φ = 9426240.

The previous prime is 28541833. The next prime is 28541881. The reversal of 28541868 is 86814582.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9603 + ... + 12218.

It is an arithmetic number, because the mean of its divisors is an integer number (2800490).

Almost surely, 2^28541868 is an apocalyptic number.

It is an amenable number.

28541868 is an abundant number, since it is smaller than the sum of its proper divisors (38669892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28541868 is a wasteful number, since it uses less digits than its factorization.

28541868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21937 (or 21935 counting only the distinct ones).

The product of its digits is 122880, while the sum is 42.

The square root of 28541868 is about 5342.4589844003. The cubic root of 28541868 is about 305.6052408803.

The spelling of 28541868 in words is "twenty-eight million, five hundred forty-one thousand, eight hundred sixty-eight".