28334747 has 4 divisors (see below), whose sum is σ = 32382576. Its totient is φ = 24286920.

The previous prime is 28334741. The next prime is 28334753. The reversal of 28334747 is 74743382.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28334741) and next prime (28334753).

It is not a de Polignac number, because 28334747 - 2¹⁶ = 28269211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28334747.

It is not an unprimeable number, because it can be changed into a prime (28334741) 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, 2023904 + ... + 2023917.

It is an arithmetic number, because the mean of its divisors is an integer number (8095644).

Almost surely, 2^28334747 is an apocalyptic number.

28334747 is a deficient number, since it is larger than the sum of its proper divisors (4047829).

28334747 is an equidigital number, since it uses as much as digits as its factorization.

28334747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4047828.

The product of its digits is 112896, while the sum is 38.

The square root of 28334747 is about 5323.0392634284. The cubic root of 28334747 is about 304.8642126007.

The spelling of 28334747 in words is "twenty-eight million, three hundred thirty-four thousand, seven hundred forty-seven".