28111076 has 48 divisors (see below), whose sum is σ = 58931712. Its totient is φ = 11481600.

The previous prime is 28111067. The next prime is 28111091. The reversal of 28111076 is 67011182.

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 15 ways as a sum of consecutive naturals, for example, 53696 + ... + 54216.

It is an arithmetic number, because the mean of its divisors is an integer number (1227744).

Almost surely, 2^28111076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28111076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29465856).

28111076 is an abundant number, since it is smaller than the sum of its proper divisors (30820636).

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

28111076 is a wasteful number, since it uses less digits than its factorization.

28111076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 28111076 is about 5301.9879290696. The cubic root of 28111076 is about 304.0599056689.

The spelling of 28111076 in words is "twenty-eight million, one hundred eleven thousand, seventy-six".