28078763 has 2 divisors, whose sum is σ = 28078764. Its totient is φ = 28078762.

The previous prime is 28078759. The next prime is 28078783. The reversal of 28078763 is 36787082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28078763 - 2² = 28078759 is a prime.

It is a super-2 number, since 2×28078763² = 1576833863220338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28078763.

It is not a weakly prime, because it can be changed into another prime (28078703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14039381 + 14039382.

It is an arithmetic number, because the mean of its divisors is an integer number (14039382).

Almost surely, 2^28078763 is an apocalyptic number.

28078763 is a deficient number, since it is larger than the sum of its proper divisors (1).

28078763 is an equidigital number, since it uses as much as digits as its factorization.

28078763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 28078763 is about 5298.9397996203. The cubic root of 28078763 is about 303.9433578391.

The spelling of 28078763 in words is "twenty-eight million, seventy-eight thousand, seven hundred sixty-three".