28248756 has 12 divisors (see below), whose sum is σ = 65913792. Its totient is φ = 9416248.

The previous prime is 28248751. The next prime is 28248793. The reversal of 28248756 is 65784282.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28248751) 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 in 3 ways as a sum of consecutive naturals, for example, 1177020 + ... + 1177043.

It is an arithmetic number, because the mean of its divisors is an integer number (5492816).

Almost surely, 2^28248756 is an apocalyptic number.

It is an amenable number.

28248756 is an abundant number, since it is smaller than the sum of its proper divisors (37665036).

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

28248756 is a wasteful number, since it uses less digits than its factorization.

28248756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354070 (or 2354068 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 28248756 is about 5314.9558794030. The cubic root of 28248756 is about 304.5554969072. Note that the first 3 decimals are identical.

The spelling of 28248756 in words is "twenty-eight million, two hundred forty-eight thousand, seven hundred fifty-six".