28755469 has 2 divisors, whose sum is σ = 28755470. Its totient is φ = 28755468.

The previous prime is 28755457. The next prime is 28755481. The reversal of 28755469 is 96455782.

It is a balanced prime because it is at equal distance from previous prime (28755457) and next prime (28755481).

It can be written as a sum of positive squares in only one way, i.e., 27405225 + 1350244 = 5235^2 + 1162^2 .

It is a cyclic number.

It is not a de Polignac number, because 28755469 - 2¹¹ = 28753421 is a prime.

It is a super-2 number, since 2×28755469² = 1653753994819922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28755409) 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, 14377734 + 14377735.

It is an arithmetic number, because the mean of its divisors is an integer number (14377735).

Almost surely, 2^28755469 is an apocalyptic number.

It is an amenable number.

28755469 is a deficient number, since it is larger than the sum of its proper divisors (1).

28755469 is an equidigital number, since it uses as much as digits as its factorization.

28755469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 46.

The square root of 28755469 is about 5362.4126100105. The cubic root of 28755469 is about 306.3657075481.

The spelling of 28755469 in words is "twenty-eight million, seven hundred fifty-five thousand, four hundred sixty-nine".