28603397 has 2 divisors, whose sum is σ = 28603398. Its totient is φ = 28603396.

The previous prime is 28603391. The next prime is 28603429. The reversal of 28603397 is 79330682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18369796 + 10233601 = 4286^2 + 3199^2 .

It is a cyclic number.

It is not a de Polignac number, because 28603397 - 2¹⁰ = 28602373 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28603397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28603391) 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, 14301698 + 14301699.

It is an arithmetic number, because the mean of its divisors is an integer number (14301699).

Almost surely, 2^28603397 is an apocalyptic number.

It is an amenable number.

28603397 is a deficient number, since it is larger than the sum of its proper divisors (1).

28603397 is an equidigital number, since it uses as much as digits as its factorization.

28603397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 28603397 is about 5348.2143749106. The cubic root of 28603397 is about 305.8246856285.

The spelling of 28603397 in words is "twenty-eight million, six hundred three thousand, three hundred ninety-seven".