28576957 has 2 divisors, whose sum is σ = 28576958. Its totient is φ = 28576956.

The previous prime is 28576943. The next prime is 28576963. The reversal of 28576957 is 75967582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28366276 + 210681 = 5326^2 + 459^2 .

It is a cyclic number.

It is not a de Polignac number, because 28576957 - 2⁷ = 28576829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28576957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28576927) 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, 14288478 + 14288479.

It is an arithmetic number, because the mean of its divisors is an integer number (14288479).

Almost surely, 2^28576957 is an apocalyptic number.

It is an amenable number.

28576957 is a deficient number, since it is larger than the sum of its proper divisors (1).

28576957 is an equidigital number, since it uses as much as digits as its factorization.

28576957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 49.

The square root of 28576957 is about 5345.7419503751. The cubic root of 28576957 is about 305.7304252924.

The spelling of 28576957 in words is "twenty-eight million, five hundred seventy-six thousand, nine hundred fifty-seven".