28543087 has 2 divisors, whose sum is σ = 28543088. Its totient is φ = 28543086.

The previous prime is 28543063. The next prime is 28543091. The reversal of 28543087 is 78034582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28543087 - 2¹¹ = 28541039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28543027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14271543 + 14271544.

It is an arithmetic number, because the mean of its divisors is an integer number (14271544).

Almost surely, 2^28543087 is an apocalyptic number.

28543087 is a deficient number, since it is larger than the sum of its proper divisors (1).

28543087 is an equidigital number, since it uses as much as digits as its factorization.

28543087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 28543087 is about 5342.5730692242. The cubic root of 28543087 is about 305.6095915356.

The spelling of 28543087 in words is "twenty-eight million, five hundred forty-three thousand, eighty-seven".