28348403 has 2 divisors, whose sum is σ = 28348404. Its totient is φ = 28348402.

The previous prime is 28348387. The next prime is 28348421. The reversal of 28348403 is 30484382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28348403 - 2⁴ = 28348387 is a prime.

It is a Chen prime.

It is equal to p_1761791 and since 28348403 and 1761791 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28348403.

It is not a weakly prime, because it can be changed into another prime (28348603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14174201 + 14174202.

It is an arithmetic number, because the mean of its divisors is an integer number (14174202).

Almost surely, 2^28348403 is an apocalyptic number.

28348403 is a deficient number, since it is larger than the sum of its proper divisors (1).

28348403 is an equidigital number, since it uses as much as digits as its factorization.

28348403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 28348403 is about 5324.3218347504. The cubic root of 28348403 is about 304.9131814167.

The spelling of 28348403 in words is "twenty-eight million, three hundred forty-eight thousand, four hundred three".