28474319 has 2 divisors, whose sum is σ = 28474320. Its totient is φ = 28474318.

The previous prime is 28474309. The next prime is 28474321. The reversal of 28474319 is 91347482.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28474319 is a prime.

It is a super-2 number, since 2×28474319² = 1621573685027522, which contains 22 as substring.

Together with 28474321, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1769078 and since 28474319 and 1769078 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28474309) 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, 14237159 + 14237160.

It is an arithmetic number, because the mean of its divisors is an integer number (14237160).

Almost surely, 2^28474319 is an apocalyptic number.

28474319 is a deficient number, since it is larger than the sum of its proper divisors (1).

28474319 is an equidigital number, since it uses as much as digits as its factorization.

28474319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 28474319 is about 5336.1333379143. The cubic root of 28474319 is about 305.3639621720.

The spelling of 28474319 in words is "twenty-eight million, four hundred seventy-four thousand, three hundred nineteen".