28840106 has 8 divisors (see below), whose sum is σ = 44655744. Its totient is φ = 13954860.

The previous prime is 28840099. The next prime is 28840117. The reversal of 28840106 is 60104882.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232520 + ... + 232643.

It is an arithmetic number, because the mean of its divisors is an integer number (5581968).

Almost surely, 2^28840106 is an apocalyptic number.

28840106 is a deficient number, since it is larger than the sum of its proper divisors (15815638).

28840106 is a wasteful number, since it uses less digits than its factorization.

28840106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465196.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28840106 is about 5370.2985019457. The cubic root of 28840106 is about 306.6659921745.

Adding to 28840106 its reverse (60104882), we get a palindrome (88944988).

The spelling of 28840106 in words is "twenty-eight million, eight hundred forty thousand, one hundred six".