28353253 has 2 divisors, whose sum is σ = 28353254. Its totient is φ = 28353252.

The previous prime is 28353233. The next prime is 28353257. The reversal of 28353253 is 35235382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25735329 + 2617924 = 5073^2 + 1618^2 .

It is a cyclic number.

It is not a de Polignac number, because 28353253 - 2⁹ = 28352741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28353257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14176626 + 14176627.

It is an arithmetic number, because the mean of its divisors is an integer number (14176627).

Almost surely, 2^28353253 is an apocalyptic number.

It is an amenable number.

28353253 is a deficient number, since it is larger than the sum of its proper divisors (1).

28353253 is an equidigital number, since it uses as much as digits as its factorization.

28353253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 28353253 is about 5324.7772723373. Note that the first 3 decimals coincide. The cubic root of 28353253 is about 304.9305691640.

The spelling of 28353253 in words is "twenty-eight million, three hundred fifty-three thousand, two hundred fifty-three".