28480493 has 2 divisors, whose sum is σ = 28480494. Its totient is φ = 28480492.

The previous prime is 28480477. The next prime is 28480513. The reversal of 28480493 is 39408482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16104169 + 12376324 = 4013^2 + 3518^2 .

It is a cyclic number.

It is not a de Polignac number, because 28480493 - 2⁴ = 28480477 is a prime.

It is a super-2 number, since 2×28480493² = 1622276963046098, which contains 22 as substring.

It is a Sophie Germain 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 (28480993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14240246 + 14240247.

It is an arithmetic number, because the mean of its divisors is an integer number (14240247).

Almost surely, 2^28480493 is an apocalyptic number.

It is an amenable number.

28480493 is a deficient number, since it is larger than the sum of its proper divisors (1).

28480493 is an equidigital number, since it uses as much as digits as its factorization.

28480493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 28480493 is about 5336.7118153410. The cubic root of 28480493 is about 305.3860309568.

The spelling of 28480493 in words is "twenty-eight million, four hundred eighty thousand, four hundred ninety-three".