28444877 has 2 divisors, whose sum is σ = 28444878. Its totient is φ = 28444876.

The previous prime is 28444837. The next prime is 28444883. The reversal of 28444877 is 77844482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26739241 + 1705636 = 5171^2 + 1306^2 .

It is a cyclic number.

It is not a de Polignac number, because 28444877 - 2¹⁰ = 28443853 is a prime.

It is a super-2 number, since 2×28444877² = 1618222055090258, 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 (28444807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14222438 + 14222439.

It is an arithmetic number, because the mean of its divisors is an integer number (14222439).

Almost surely, 2^28444877 is an apocalyptic number.

It is an amenable number.

28444877 is a deficient number, since it is larger than the sum of its proper divisors (1).

28444877 is an equidigital number, since it uses as much as digits as its factorization.

28444877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 401408, while the sum is 44.

The square root of 28444877 is about 5333.3738852625. The cubic root of 28444877 is about 305.2586786913.

The spelling of 28444877 in words is "twenty-eight million, four hundred forty-four thousand, eight hundred seventy-seven".