28109126 has 16 divisors (see below), whose sum is σ = 46085760. Its totient is φ = 12800640.

The previous prime is 28109117. The next prime is 28109131. The reversal of 28109126 is 62190182.

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 7 ways as a sum of consecutive naturals, for example, 12281 + ... + 14388.

It is an arithmetic number, because the mean of its divisors is an integer number (2880360).

Almost surely, 2^28109126 is an apocalyptic number.

28109126 is a deficient number, since it is larger than the sum of its proper divisors (17976634).

28109126 is a wasteful number, since it uses less digits than its factorization.

28109126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26719.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 28109126 is about 5301.8040325912. The cubic root of 28109126 is about 304.0528748634.

The spelling of 28109126 in words is "twenty-eight million, one hundred nine thousand, one hundred twenty-six".