28763249 has 2 divisors, whose sum is σ = 28763250. Its totient is φ = 28763248.

The previous prime is 28763239. The next prime is 28763279. The reversal of 28763249 is 94236782.

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., 21687649 + 7075600 = 4657^2 + 2660^2 .

It is a cyclic number.

It is not a de Polignac number, because 28763249 - 2⁴ = 28763233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28763219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14381624 + 14381625.

It is an arithmetic number, because the mean of its divisors is an integer number (14381625).

Almost surely, 2^28763249 is an apocalyptic number.

It is an amenable number.

28763249 is a deficient number, since it is larger than the sum of its proper divisors (1).

28763249 is an equidigital number, since it uses as much as digits as its factorization.

28763249 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 28763249 is about 5363.1379806975. The cubic root of 28763249 is about 306.3933348756.

It can be divided in two parts, 287 and 63249, that added together give a palindrome (63536).

The spelling of 28763249 in words is "twenty-eight million, seven hundred sixty-three thousand, two hundred forty-nine".