28829357 has 2 divisors, whose sum is σ = 28829358. Its totient is φ = 28829356.

The previous prime is 28829299. The next prime is 28829407. The reversal of 28829357 is 75392882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28079401 + 749956 = 5299^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 28829357 - 2¹⁰ = 28828333 is a prime.

It is a super-2 number, since 2×28829357² = 1662263650066898, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28829057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14414678 + 14414679.

It is an arithmetic number, because the mean of its divisors is an integer number (14414679).

Almost surely, 2^28829357 is an apocalyptic number.

It is an amenable number.

28829357 is a deficient number, since it is larger than the sum of its proper divisors (1).

28829357 is an equidigital number, since it uses as much as digits as its factorization.

28829357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 28829357 is about 5369.2976263195. The cubic root of 28829357 is about 306.6278882651.

The spelling of 28829357 in words is "twenty-eight million, eight hundred twenty-nine thousand, three hundred fifty-seven".