28004102 has 8 divisors (see below), whose sum is σ = 48007056. Its totient is φ = 12001752.

The previous prime is 28004099. The next prime is 28004143. The reversal of 28004102 is 20140082.

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

It is a congruent number.

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, 1000133 + ... + 1000160.

It is an arithmetic number, because the mean of its divisors is an integer number (6000882).

Almost surely, 2^28004102 is an apocalyptic number.

28004102 is a deficient number, since it is larger than the sum of its proper divisors (20002954).

28004102 is a wasteful number, since it uses less digits than its factorization.

28004102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000302.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 28004102 is about 5291.8902105013. The cubic root of 28004102 is about 303.6737251396.

Adding to 28004102 its reverse (20140082), we get a palindrome (48144184).

The spelling of 28004102 in words is "twenty-eight million, four thousand, one hundred two".