82478293 has 2 divisors, whose sum is σ = 82478294. Its totient is φ = 82478292.

The previous prime is 82478251. The next prime is 82478303. The reversal of 82478293 is 39287428.

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., 78180964 + 4297329 = 8842^2 + 2073^2 .

It is a cyclic number.

It is not a de Polignac number, because 82478293 - 2⁹ = 82477781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82470293) 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, 41239146 + 41239147.

It is an arithmetic number, because the mean of its divisors is an integer number (41239147).

Almost surely, 2^82478293 is an apocalyptic number.

It is an amenable number.

82478293 is a deficient number, since it is larger than the sum of its proper divisors (1).

82478293 is an equidigital number, since it uses as much as digits as its factorization.

82478293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 82478293 is about 9081.7560526585. The cubic root of 82478293 is about 435.2912006239.

The spelling of 82478293 in words is "eighty-two million, four hundred seventy-eight thousand, two hundred ninety-three".