28248473 has 8 divisors (see below), whose sum is σ = 31277280. Its totient is φ = 25296480.

The previous prime is 28248461. The next prime is 28248499. The reversal of 28248473 is 37484282.

It is a happy number.

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

It is not a de Polignac number, because 28248473 - 2¹⁰ = 28247449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28248443) 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 7 ways as a sum of consecutive naturals, for example, 18428 + ... + 19901.

It is an arithmetic number, because the mean of its divisors is an integer number (3909660).

Almost surely, 2^28248473 is an apocalyptic number.

It is an amenable number.

28248473 is a deficient number, since it is larger than the sum of its proper divisors (3028807).

28248473 is a wasteful number, since it uses less digits than its factorization.

28248473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38407.

The product of its digits is 86016, while the sum is 38.

The square root of 28248473 is about 5314.9292563495. The cubic root of 28248473 is about 304.5544798773.

The spelling of 28248473 in words is "twenty-eight million, two hundred forty-eight thousand, four hundred seventy-three".