28348747 has 16 divisors (see below), whose sum is σ = 33992640. Its totient is φ = 23127552.

The previous prime is 28348729. The next prime is 28348769. The reversal of 28348747 is 74784382.

It is not a de Polignac number, because 28348747 - 2¹⁵ = 28315979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28348717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13863 + ... + 15775.

It is an arithmetic number, because the mean of its divisors is an integer number (2124540).

Almost surely, 2^28348747 is an apocalyptic number.

28348747 is a deficient number, since it is larger than the sum of its proper divisors (5643893).

28348747 is a wasteful number, since it uses less digits than its factorization.

28348747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022.

The product of its digits is 301056, while the sum is 43.

The square root of 28348747 is about 5324.3541392360. The cubic root of 28348747 is about 304.9144147573.

The spelling of 28348747 in words is "twenty-eight million, three hundred forty-eight thousand, seven hundred forty-seven".