28751044 has 27 divisors (see below), whose sum is σ = 58682127. Its totient is φ = 12289704.

The previous prime is 28751033. The next prime is 28751053. The reversal of 28751044 is 44015782.

The square root of 28751044 is 5362.

It is a perfect power (a square), and thus also a powerful number.

It is a junction number, because it is equal to n+sod(n) for n = 28750997 and 28751015.

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 8 ways as a sum of consecutive naturals, for example, 74877 + ... + 75259.

Almost surely, 2^28751044 is an apocalyptic number.

28751044 is the 5362-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28751044

28751044 is an abundant number, since it is smaller than the sum of its proper divisors (29931083).

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

28751044 is an equidigital number, since it uses as much as digits as its factorization.

28751044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The cubic root of 28751044 is about 306.3499918385.

The spelling of 28751044 in words is "twenty-eight million, seven hundred fifty-one thousand, forty-four".