28108446 has 16 divisors (see below), whose sum is σ = 59523984. Its totient is φ = 8818304.

The previous prime is 28108439. The next prime is 28108447. The reversal of 28108446 is 64480182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28108447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137685 + ... + 137888.

It is an arithmetic number, because the mean of its divisors is an integer number (3720249).

Almost surely, 2^28108446 is an apocalyptic number.

28108446 is an abundant number, since it is smaller than the sum of its proper divisors (31415538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28108446 is a wasteful number, since it uses less digits than its factorization.

28108446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275595.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28108446 is about 5301.7399030884. The cubic root of 28108446 is about 304.0504230188.

The spelling of 28108446 in words is "twenty-eight million, one hundred eight thousand, four hundred forty-six".