28957339 has 2 divisors, whose sum is σ = 28957340. Its totient is φ = 28957338.

The previous prime is 28957337. The next prime is 28957343. The reversal of 28957339 is 93375982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28957339 - 2¹ = 28957337 is a prime.

Together with 28957337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28957337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14478669 + 14478670.

It is an arithmetic number, because the mean of its divisors is an integer number (14478670).

Almost surely, 2^28957339 is an apocalyptic number.

28957339 is a deficient number, since it is larger than the sum of its proper divisors (1).

28957339 is an equidigital number, since it uses as much as digits as its factorization.

28957339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The square root of 28957339 is about 5381.2023749344. The cubic root of 28957339 is about 307.0809556367.

The spelling of 28957339 in words is "twenty-eight million, nine hundred fifty-seven thousand, three hundred thirty-nine".