28594331 has 2 divisors, whose sum is σ = 28594332. Its totient is φ = 28594330.

The previous prime is 28594309. The next prime is 28594333. The reversal of 28594331 is 13349582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28594331 is a prime.

It is a super-2 number, since 2×28594331² = 1635271530675122, which contains 22 as substring.

Together with 28594333, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28594291 and 28594300.

It is not a weakly prime, because it can be changed into another prime (28594333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14297165 + 14297166.

It is an arithmetic number, because the mean of its divisors is an integer number (14297166).

Almost surely, 2^28594331 is an apocalyptic number.

28594331 is a deficient number, since it is larger than the sum of its proper divisors (1).

28594331 is an equidigital number, since it uses as much as digits as its factorization.

28594331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 28594331 is about 5347.3667351323. The cubic root of 28594331 is about 305.7923712898.

The spelling of 28594331 in words is "twenty-eight million, five hundred ninety-four thousand, three hundred thirty-one".