28422829 has 2 divisors, whose sum is σ = 28422830. Its totient is φ = 28422828.

The previous prime is 28422811. The next prime is 28422833. The reversal of 28422829 is 92822482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28068804 + 354025 = 5298^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 28422829 - 2⁷ = 28422701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28422839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14211414 + 14211415.

It is an arithmetic number, because the mean of its divisors is an integer number (14211415).

Almost surely, 2^28422829 is an apocalyptic number.

It is an amenable number.

28422829 is a deficient number, since it is larger than the sum of its proper divisors (1).

28422829 is an equidigital number, since it uses as much as digits as its factorization.

28422829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 37.

The square root of 28422829 is about 5331.3065002868. The cubic root of 28422829 is about 305.1797882931.

It can be divided in two parts, 2842 and 2829, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 28422829 in words is "twenty-eight million, four hundred twenty-two thousand, eight hundred twenty-nine".