28863437 has 2 divisors, whose sum is σ = 28863438. Its totient is φ = 28863436.

The previous prime is 28863427. The next prime is 28863463. The reversal of 28863437 is 73436882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15217801 + 13645636 = 3901^2 + 3694^2 .

It is a cyclic number.

It is not a de Polignac number, because 28863437 - 2⁴ = 28863421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28863394 and 28863403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28863407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14431718 + 14431719.

It is an arithmetic number, because the mean of its divisors is an integer number (14431719).

Almost surely, 2^28863437 is an apocalyptic number.

It is an amenable number.

28863437 is a deficient number, since it is larger than the sum of its proper divisors (1).

28863437 is an equidigital number, since it uses as much as digits as its factorization.

28863437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 41.

The square root of 28863437 is about 5372.4702884241. The cubic root of 28863437 is about 306.7486651921.

The spelling of 28863437 in words is "twenty-eight million, eight hundred sixty-three thousand, four hundred thirty-seven".