28090877 has 2 divisors, whose sum is σ = 28090878. Its totient is φ = 28090876.

The previous prime is 28090859. The next prime is 28090897. The reversal of 28090877 is 77809082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18567481 + 9523396 = 4309^2 + 3086^2 .

It is a cyclic number.

It is not a de Polignac number, because 28090877 - 2¹⁸ = 27828733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28090837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14045438 + 14045439.

It is an arithmetic number, because the mean of its divisors is an integer number (14045439).

Almost surely, 2^28090877 is an apocalyptic number.

It is an amenable number.

28090877 is a deficient number, since it is larger than the sum of its proper divisors (1).

28090877 is an equidigital number, since it uses as much as digits as its factorization.

28090877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 28090877 is about 5300.0827352033. The cubic root of 28090877 is about 303.9870615742.

The spelling of 28090877 in words is "twenty-eight million, ninety thousand, eight hundred seventy-seven".