28754281 has 2 divisors, whose sum is σ = 28754282. Its totient is φ = 28754280.

The previous prime is 28754279. The next prime is 28754333. The reversal of 28754281 is 18245782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26625600 + 2128681 = 5160^2 + 1459^2 .

It is a cyclic number.

It is not a de Polignac number, because 28754281 - 2¹ = 28754279 is a prime.

It is a super-2 number, since 2×28754281² = 1653617351653922, which contains 22 as substring.

Together with 28754279, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28754281.

It is not a weakly prime, because it can be changed into another prime (28754251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14377140 + 14377141.

It is an arithmetic number, because the mean of its divisors is an integer number (14377141).

Almost surely, 2^28754281 is an apocalyptic number.

It is an amenable number.

28754281 is a deficient number, since it is larger than the sum of its proper divisors (1).

28754281 is an equidigital number, since it uses as much as digits as its factorization.

28754281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 37.

The square root of 28754281 is about 5362.3018378305. The cubic root of 28754281 is about 306.3614884380.

The spelling of 28754281 in words is "twenty-eight million, seven hundred fifty-four thousand, two hundred eighty-one".