28751248 has 10 divisors (see below), whose sum is σ = 55705574. Its totient is φ = 14375616.

The previous prime is 28751243. The next prime is 28751249. The reversal of 28751248 is 84215782.

It can be written as a sum of positive squares in only one way, i.e., 20178064 + 8573184 = 4492^2 + 2928^2 .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (28751243) by changing a digit.

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 as a sum of consecutive naturals, namely, 898461 + ... + 898492.

Almost surely, 2^28751248 is an apocalyptic number.

It is an amenable number.

28751248 is a deficient number, since it is larger than the sum of its proper divisors (26954326).

28751248 is a wasteful number, since it uses less digits than its factorization.

28751248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796961 (or 1796955 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 28751248 is about 5362.0190227190. The cubic root of 28751248 is about 306.3507163948.

The spelling of 28751248 in words is "twenty-eight million, seven hundred fifty-one thousand, two hundred forty-eight".