28535393 has 2 divisors, whose sum is σ = 28535394. Its totient is φ = 28535392.

The previous prime is 28535383. The next prime is 28535411. The reversal of 28535393 is 39353582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27331984 + 1203409 = 5228^2 + 1097^2 .

It is a cyclic number.

It is not a de Polignac number, because 28535393 - 2¹⁰ = 28534369 is a prime.

It is not a weakly prime, because it can be changed into another prime (28535383) 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, 14267696 + 14267697.

It is an arithmetic number, because the mean of its divisors is an integer number (14267697).

Almost surely, 2^28535393 is an apocalyptic number.

It is an amenable number.

28535393 is a deficient number, since it is larger than the sum of its proper divisors (1).

28535393 is an equidigital number, since it uses as much as digits as its factorization.

28535393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 38.

The square root of 28535393 is about 5341.8529556700. The cubic root of 28535393 is about 305.5821292934.

The spelling of 28535393 in words is "twenty-eight million, five hundred thirty-five thousand, three hundred ninety-three".