28338811 has 2 divisors, whose sum is σ = 28338812. Its totient is φ = 28338810.

The previous prime is 28338799. The next prime is 28338833. The reversal of 28338811 is 11883382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28338811 - 2⁷ = 28338683 is a prime.

It is not a weakly prime, because it can be changed into another prime (28338311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14169405 + 14169406.

It is an arithmetic number, because the mean of its divisors is an integer number (14169406).

Almost surely, 2^28338811 is an apocalyptic number.

28338811 is a deficient number, since it is larger than the sum of its proper divisors (1).

28338811 is an equidigital number, since it uses as much as digits as its factorization.

28338811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 28338811 is about 5323.4209865462. The cubic root of 28338811 is about 304.8787872727.

The spelling of 28338811 in words is "twenty-eight million, three hundred thirty-eight thousand, eight hundred eleven".