28108776 has 16 divisors (see below), whose sum is σ = 70272000. Its totient is φ = 9369584.

The previous prime is 28108673. The next prime is 28108777. The reversal of 28108776 is 67780182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28108777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585576 + ... + 585623.

It is an arithmetic number, because the mean of its divisors is an integer number (4392000).

Almost surely, 2^28108776 is an apocalyptic number.

It is an amenable number.

28108776 is an abundant number, since it is smaller than the sum of its proper divisors (42163224).

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

28108776 is a wasteful number, since it uses less digits than its factorization.

28108776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171208 (or 1171204 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 28108776 is about 5301.7710248558. The cubic root of 28108776 is about 304.0516128895.

The spelling of 28108776 in words is "twenty-eight million, one hundred eight thousand, seven hundred seventy-six".