28816253 has 2 divisors, whose sum is σ = 28816254. Its totient is φ = 28816252.

The previous prime is 28816247. The next prime is 28816289. The reversal of 28816253 is 35261882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21187609 + 7628644 = 4603^2 + 2762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28816253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28816213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14408126 + 14408127.

It is an arithmetic number, because the mean of its divisors is an integer number (14408127).

Almost surely, 2^28816253 is an apocalyptic number.

It is an amenable number.

28816253 is a deficient number, since it is larger than the sum of its proper divisors (1).

28816253 is an equidigital number, since it uses as much as digits as its factorization.

28816253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 28816253 is about 5368.0772162852. The cubic root of 28816253 is about 306.5814233510.

It can be divided in two parts, 288 and 16253, that multiplied together give a palindrome (4680864).

The spelling of 28816253 in words is "twenty-eight million, eight hundred sixteen thousand, two hundred fifty-three".