28025018 has 8 divisors (see below), whose sum is σ = 48042912. Its totient is φ = 12010716.

The previous prime is 28025009. The next prime is 28025029. The reversal of 28025018 is 81052082.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 1000880 + ... + 1000907.

It is an arithmetic number, because the mean of its divisors is an integer number (6005364).

Almost surely, 2^28025018 is an apocalyptic number.

28025018 is a deficient number, since it is larger than the sum of its proper divisors (20017894).

28025018 is a wasteful number, since it uses less digits than its factorization.

28025018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001796.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 28025018 is about 5293.8660731076. The cubic root of 28025018 is about 303.7493100065.

The spelling of 28025018 in words is "twenty-eight million, twenty-five thousand, eighteen".