28783829 has 2 divisors, whose sum is σ = 28783830. Its totient is φ = 28783828.

The previous prime is 28783801. The next prime is 28783831. The reversal of 28783829 is 92838782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23261329 + 5522500 = 4823^2 + 2350^2 .

It is a cyclic number.

It is not a de Polignac number, because 28783829 - 2¹² = 28779733 is a prime.

Together with 28783831, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28783849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14391914 + 14391915.

It is an arithmetic number, because the mean of its divisors is an integer number (14391915).

Almost surely, 2^28783829 is an apocalyptic number.

It is an amenable number.

28783829 is a deficient number, since it is larger than the sum of its proper divisors (1).

28783829 is an equidigital number, since it uses as much as digits as its factorization.

28783829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The square root of 28783829 is about 5365.0562904782. The cubic root of 28783829 is about 306.4663918931.

The spelling of 28783829 in words is "twenty-eight million, seven hundred eighty-three thousand, eight hundred twenty-nine".