28363331 has 2 divisors, whose sum is σ = 28363332. Its totient is φ = 28363330.

The previous prime is 28363319. The next prime is 28363343. The reversal of 28363331 is 13336382.

It is a balanced prime because it is at equal distance from previous prime (28363319) and next prime (28363343).

It is a cyclic number.

It is not a de Polignac number, because 28363331 - 2¹⁴ = 28346947 is a prime.

It is a super-2 number, since 2×28363331² = 1608957090831122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28363294 and 28363303.

It is not a weakly prime, because it can be changed into another prime (28363381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14181665 + 14181666.

It is an arithmetic number, because the mean of its divisors is an integer number (14181666).

Almost surely, 2^28363331 is an apocalyptic number.

28363331 is a deficient number, since it is larger than the sum of its proper divisors (1).

28363331 is an equidigital number, since it uses as much as digits as its factorization.

28363331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 29.

The square root of 28363331 is about 5325.7235189221. The cubic root of 28363331 is about 304.9666934874.

The spelling of 28363331 in words is "twenty-eight million, three hundred sixty-three thousand, three hundred thirty-one".