28183776 has 48 divisors (see below), whose sum is σ = 74453904. Its totient is φ = 9334784.

The previous prime is 28183759. The next prime is 28183789. The reversal of 28183776 is 67738182.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15760 + ... + 17456.

It is an arithmetic number, because the mean of its divisors is an integer number (1551123).

Almost surely, 2^28183776 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 28183776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37226952).

28183776 is an abundant number, since it is smaller than the sum of its proper divisors (46270128).

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

28183776 is a wasteful number, since it uses less digits than its factorization.

28183776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883 (or 1875 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 28183776 is about 5308.8394211918. The cubic root of 28183776 is about 304.3217968251.

The spelling of 28183776 in words is "twenty-eight million, one hundred eighty-three thousand, seven hundred seventy-six".