28636793 has 2 divisors, whose sum is σ = 28636794. Its totient is φ = 28636792.

The previous prime is 28636787. The next prime is 28636813. The reversal of 28636793 is 39763682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28015849 + 620944 = 5293^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 28636793 - 2²² = 24442489 is a prime.

It is not a weakly prime, because it can be changed into another prime (28636703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14318396 + 14318397.

It is an arithmetic number, because the mean of its divisors is an integer number (14318397).

Almost surely, 2^28636793 is an apocalyptic number.

It is an amenable number.

28636793 is a deficient number, since it is larger than the sum of its proper divisors (1).

28636793 is an equidigital number, since it uses as much as digits as its factorization.

28636793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 44.

The square root of 28636793 is about 5351.3356276728. The cubic root of 28636793 is about 305.9436615776.

It can be divided in two parts, 2863679 and 3, that added together give a palindrome (2863682).

The spelling of 28636793 in words is "twenty-eight million, six hundred thirty-six thousand, seven hundred ninety-three".