28044672 has 64 divisors (see below), whose sum is σ = 75072000. Its totient is φ = 9275904.

The previous prime is 28044617. The next prime is 28044691. The reversal of 28044672 is 27644082.

It is a tau number, because it is divible by the number of its divisors (64).

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, 76233 + ... + 76599.

It is an arithmetic number, because the mean of its divisors is an integer number (1173000).

Almost surely, 2^28044672 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 28044672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37536000).

28044672 is an abundant number, since it is smaller than the sum of its proper divisors (47027328).

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

28044672 is a wasteful number, since it uses less digits than its factorization.

28044672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 28044672 is about 5295.7220470867. The cubic root of 28044672 is about 303.8203000759.

The spelling of 28044672 in words is "twenty-eight million, forty-four thousand, six hundred seventy-two".