28195763 has 2 divisors, whose sum is σ = 28195764. Its totient is φ = 28195762.

The previous prime is 28195759. The next prime is 28195781. The reversal of 28195763 is 36759182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28195763 - 2² = 28195759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28195763.

It is not a weakly prime, because it can be changed into another prime (28195703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14097881 + 14097882.

It is an arithmetic number, because the mean of its divisors is an integer number (14097882).

Almost surely, 2^28195763 is an apocalyptic number.

28195763 is a deficient number, since it is larger than the sum of its proper divisors (1).

28195763 is an equidigital number, since it uses as much as digits as its factorization.

28195763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 28195763 is about 5309.9682673251. The cubic root of 28195763 is about 304.3649349805.

The spelling of 28195763 in words is "twenty-eight million, one hundred ninety-five thousand, seven hundred sixty-three".