28627349 has 2 divisors, whose sum is σ = 28627350. Its totient is φ = 28627348.

The previous prime is 28627343. The next prime is 28627351. The reversal of 28627349 is 94372682.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18748900 + 9878449 = 4330^2 + 3143^2 .

It is a cyclic number.

It is not a de Polignac number, because 28627349 - 2²⁴ = 11850133 is a prime.

It is a super-2 number, since 2×28627349² = 1639050221535602, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 28627351, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28627343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14313674 + 14313675.

It is an arithmetic number, because the mean of its divisors is an integer number (14313675).

Almost surely, 2^28627349 is an apocalyptic number.

It is an amenable number.

28627349 is a deficient number, since it is larger than the sum of its proper divisors (1).

28627349 is an equidigital number, since it uses as much as digits as its factorization.

28627349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 28627349 is about 5350.4531583783. The cubic root of 28627349 is about 305.9100259488.

The spelling of 28627349 in words is "twenty-eight million, six hundred twenty-seven thousand, three hundred forty-nine".