28005896 has 16 divisors (see below), whose sum is σ = 54205440. Its totient is φ = 13551120.

The previous prime is 28005877. The next prime is 28005907. The reversal of 28005896 is 69850082.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56216 + ... + 56711.

It is an arithmetic number, because the mean of its divisors is an integer number (3387840).

Almost surely, 2^28005896 is an apocalyptic number.

It is an amenable number.

28005896 is a deficient number, since it is larger than the sum of its proper divisors (26199544).

28005896 is a wasteful number, since it uses less digits than its factorization.

28005896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112964 (or 112960 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 28005896 is about 5292.0597124371. The cubic root of 28005896 is about 303.6802096543.

The spelling of 28005896 in words is "twenty-eight million, five thousand, eight hundred ninety-six".