28524544 has 30 divisors (see below), whose sum is σ = 57080114. Its totient is φ = 14254080.

The previous prime is 28524497. The next prime is 28524631. The reversal of 28524544 is 44542582.

It can be written as a sum of positive squares in only one way, i.e., 14745600 + 13778944 = 3840^2 + 3712^2 .

It is a super-2 number, since 2×28524544² = 1627299220815872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15514 + ... + 17254.

Almost surely, 2^28524544 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 28524544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28540057).

28524544 is an abundant number, since it is smaller than the sum of its proper divisors (28555570).

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

28524544 is an frugal number, since it uses more digits than its factorization.

28524544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769 (or 1743 counting only the distinct ones).

The product of its digits is 51200, while the sum is 34.

The square root of 28524544 is about 5340.8373875264. The cubic root of 28524544 is about 305.5433975009.

It can be divided in two parts, 2852 and 4544, that added together give a square (7396 = 86²).

The spelling of 28524544 in words is "twenty-eight million, five hundred twenty-four thousand, five hundred forty-four".