28248746 has 8 divisors (see below), whose sum is σ = 42396804. Its totient is φ = 14116480.

The previous prime is 28248743. The next prime is 28248751. The reversal of 28248746 is 64784282.

It can be written as a sum of positive squares in 2 ways, for example, as 28206721 + 42025 = 5311^2 + 205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28248743) 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, 2906 + ... + 8058.

Almost surely, 2^28248746 is an apocalyptic number.

28248746 is a deficient number, since it is larger than the sum of its proper divisors (14148058).

28248746 is a wasteful number, since it uses less digits than its factorization.

28248746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896.

The product of its digits is 172032, while the sum is 41.

The square root of 28248746 is about 5314.9549386613. The cubic root of 28248746 is about 304.5554609699. Note that the first 3 decimals are identical.

The spelling of 28248746 in words is "twenty-eight million, two hundred forty-eight thousand, seven hundred forty-six".