28354747 has 2 divisors, whose sum is σ = 28354748. Its totient is φ = 28354746.

The previous prime is 28354741. The next prime is 28354757. The reversal of 28354747 is 74745382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28354747 - 2¹¹ = 28352699 is a prime.

It is not a weakly prime, because it can be changed into another prime (28354741) 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 as a sum of consecutive naturals, namely, 14177373 + 14177374.

It is an arithmetic number, because the mean of its divisors is an integer number (14177374).

Almost surely, 2^28354747 is an apocalyptic number.

28354747 is a deficient number, since it is larger than the sum of its proper divisors (1).

28354747 is an equidigital number, since it uses as much as digits as its factorization.

28354747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 40.

The square root of 28354747 is about 5324.9175580473. The cubic root of 28354747 is about 304.9359249077.

The spelling of 28354747 in words is "twenty-eight million, three hundred fifty-four thousand, seven hundred forty-seven".