28284811 has 2 divisors, whose sum is σ = 28284812. Its totient is φ = 28284810.

The previous prime is 28284797. The next prime is 28284833. The reversal of 28284811 is 11848282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28284811 - 2⁹ = 28284299 is a prime.

It is not a weakly prime, because it can be changed into another prime (28284211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14142405 + 14142406.

It is an arithmetic number, because the mean of its divisors is an integer number (14142406).

Almost surely, 2^28284811 is an apocalyptic number.

28284811 is a deficient number, since it is larger than the sum of its proper divisors (1).

28284811 is an equidigital number, since it uses as much as digits as its factorization.

28284811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8192, while the sum is 34.

The square root of 28284811 is about 5318.3466415795. The cubic root of 28284811 is about 304.6850138793.

The spelling of 28284811 in words is "twenty-eight million, two hundred eighty-four thousand, eight hundred eleven".