28576501 has 2 divisors, whose sum is σ = 28576502. Its totient is φ = 28576500.

The previous prime is 28576477. The next prime is 28576531. The reversal of 28576501 is 10567582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17514225 + 11062276 = 4185^2 + 3326^2 .

It is a cyclic number.

It is not a de Polignac number, because 28576501 - 2¹⁷ = 28445429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28576531) 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, 14288250 + 14288251.

It is an arithmetic number, because the mean of its divisors is an integer number (14288251).

Almost surely, 2^28576501 is an apocalyptic number.

It is an amenable number.

28576501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28576501 is an equidigital number, since it uses as much as digits as its factorization.

28576501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 28576501 is about 5345.6992994369. The cubic root of 28576501 is about 305.7287991126.

The spelling of 28576501 in words is "twenty-eight million, five hundred seventy-six thousand, five hundred one".