28142102 has 8 divisors (see below), whose sum is σ = 42432456. Its totient is φ = 13997952.

The previous prime is 28142071. The next prime is 28142111. The reversal of 28142102 is 20124182.

It is a happy number.

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, 36068 + ... + 36839.

It is an arithmetic number, because the mean of its divisors is an integer number (5304057).

Almost surely, 2^28142102 is an apocalyptic number.

28142102 is a deficient number, since it is larger than the sum of its proper divisors (14290354).

28142102 is a wasteful number, since it uses less digits than its factorization.

28142102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73102.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 28142102 is about 5304.9130058843. The cubic root of 28142102 is about 304.1717274778.

Adding to 28142102 its reverse (20124182), we get a palindrome (48266284).

The spelling of 28142102 in words is "twenty-eight million, one hundred forty-two thousand, one hundred two".