28422811 has 2 divisors, whose sum is σ = 28422812. Its totient is φ = 28422810.

The previous prime is 28422763. The next prime is 28422829. The reversal of 28422811 is 11822482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28422811 - 2⁷ = 28422683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28422811.

It is not a weakly prime, because it can be changed into another prime (28422851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14211405 + 14211406.

It is an arithmetic number, because the mean of its divisors is an integer number (14211406).

Almost surely, 2^28422811 is an apocalyptic number.

28422811 is a deficient number, since it is larger than the sum of its proper divisors (1).

28422811 is an equidigital number, since it uses as much as digits as its factorization.

28422811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2048, while the sum is 28.

The square root of 28422811 is about 5331.3048121450. The cubic root of 28422811 is about 305.1797238702.

The spelling of 28422811 in words is "twenty-eight million, four hundred twenty-two thousand, eight hundred eleven".