28888747 has 2 divisors, whose sum is σ = 28888748. Its totient is φ = 28888746.

The previous prime is 28888681. The next prime is 28888753. The reversal of 28888747 is 74788882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28888747 - 2⁷ = 28888619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28888694 and 28888703.

It is not a weakly prime, because it can be changed into another prime (28858747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14444373 + 14444374.

It is an arithmetic number, because the mean of its divisors is an integer number (14444374).

Almost surely, 2^28888747 is an apocalyptic number.

28888747 is a deficient number, since it is larger than the sum of its proper divisors (1).

28888747 is an equidigital number, since it uses as much as digits as its factorization.

28888747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1605632, while the sum is 52.

The square root of 28888747 is about 5374.8252994865. The cubic root of 28888747 is about 306.8383003995.

The spelling of 28888747 in words is "twenty-eight million, eight hundred eighty-eight thousand, seven hundred forty-seven".