28076544 has 100 divisors (see below), whose sum is σ = 83924874. Its totient is φ = 9345024.

The previous prime is 28076527. The next prime is 28076557. The reversal of 28076544 is 44567082.

It can be written as a sum of positive squares in only one way, i.e., 15116544 + 12960000 = 3888^2 + 3600^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28076499 and 28076508.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 41134 + ... + 41810.

Almost surely, 2^28076544 is an apocalyptic number.

28076544 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 28076544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41962437).

28076544 is an abundant number, since it is smaller than the sum of its proper divisors (55848330).

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

28076544 is an frugal number, since it uses more digits than its factorization.

28076544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 28076544 is about 5298.7304139765. The cubic root of 28076544 is about 303.9353509802.

The spelling of 28076544 in words is "twenty-eight million, seventy-six thousand, five hundred forty-four".