28733387 has 2 divisors, whose sum is σ = 28733388. Its totient is φ = 28733386.

The previous prime is 28733359. The next prime is 28733401. The reversal of 28733387 is 78333782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28733387 - 2¹² = 28729291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28733987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14366693 + 14366694.

It is an arithmetic number, because the mean of its divisors is an integer number (14366694).

Almost surely, 2^28733387 is an apocalyptic number.

28733387 is a deficient number, since it is larger than the sum of its proper divisors (1).

28733387 is an equidigital number, since it uses as much as digits as its factorization.

28733387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 28733387 is about 5360.3532532847. The cubic root of 28733387 is about 306.2872656582.

The spelling of 28733387 in words is "twenty-eight million, seven hundred thirty-three thousand, three hundred eighty-seven".