28107744 has 96 divisors (see below), whose sum is σ = 85188096. Its totient is φ = 7948800.

The previous prime is 28107727. The next prime is 28107769. The reversal of 28107744 is 44770182.

It is a tau number, because it is divible by the number of its divisors (96).

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, 101334 + ... + 101610.

It is an arithmetic number, because the mean of its divisors is an integer number (887376).

Almost surely, 2^28107744 is an apocalyptic number.

28107744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28107744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42594048).

28107744 is an abundant number, since it is smaller than the sum of its proper divisors (57080352).

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

28107744 is a wasteful number, since it uses less digits than its factorization.

28107744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 28107744 is about 5301.6736979939. The cubic root of 28107744 is about 304.0478918084.

The spelling of 28107744 in words is "twenty-eight million, one hundred seven thousand, seven hundred forty-four".