28249763 has 2 divisors, whose sum is σ = 28249764. Its totient is φ = 28249762.

The previous prime is 28249747. The next prime is 28249769. The reversal of 28249763 is 36794282.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28249763 - 2⁴ = 28249747 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28249763.

It is not a weakly prime, because it can be changed into another prime (28249769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14124881 + 14124882.

It is an arithmetic number, because the mean of its divisors is an integer number (14124882).

Almost surely, 2^28249763 is an apocalyptic number.

28249763 is a deficient number, since it is larger than the sum of its proper divisors (1).

28249763 is an equidigital number, since it uses as much as digits as its factorization.

28249763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 28249763 is about 5315.0506112360. The cubic root of 28249763 is about 304.5591157538.

The spelling of 28249763 in words is "twenty-eight million, two hundred forty-nine thousand, seven hundred sixty-three".