28248651 has 12 divisors (see below), whose sum is σ = 41041728. Its totient is φ = 18722544.

The previous prime is 28248643. The next prime is 28248683. The reversal of 28248651 is 15684282.

It is not a de Polignac number, because 28248651 - 2³ = 28248643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28248601) 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 11 ways as a sum of consecutive naturals, for example, 7515 + ... + 10628.

It is an arithmetic number, because the mean of its divisors is an integer number (3420144).

Almost surely, 2^28248651 is an apocalyptic number.

28248651 is a deficient number, since it is larger than the sum of its proper divisors (12793077).

28248651 is a wasteful number, since it uses less digits than its factorization.

28248651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18322 (or 18319 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 28248651 is about 5314.9460016072. The cubic root of 28248651 is about 304.5551195647. Note that the first 3 decimals are identical.

The spelling of 28248651 in words is "twenty-eight million, two hundred forty-eight thousand, six hundred fifty-one".