28250747 has 8 divisors (see below), whose sum is σ = 32816352. Its totient is φ = 23817600.

The previous prime is 28250731. The next prime is 28250773. The reversal of 28250747 is 74705282.

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

It is a cyclic number.

It is not a de Polignac number, because 28250747 - 2⁴ = 28250731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28250707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32654 + ... + 33507.

It is an arithmetic number, because the mean of its divisors is an integer number (4102044).

Almost surely, 2^28250747 is an apocalyptic number.

28250747 is a deficient number, since it is larger than the sum of its proper divisors (4565605).

28250747 is an equidigital number, since it uses as much as digits as its factorization.

28250747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66229.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 28250747 is about 5315.1431777517. The cubic root of 28250747 is about 304.5626518624.

The spelling of 28250747 in words is "twenty-eight million, two hundred fifty thousand, seven hundred forty-seven".