102782293 has 4 divisors (see below), whose sum is σ = 106326540. Its totient is φ = 99238048.

The previous prime is 102782291. The next prime is 102782297. The reversal of 102782293 is 392287201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53319204 + 49463089 = 7302^2 + 7033^2 .

It is a cyclic number.

It is not a de Polignac number, because 102782293 - 2¹ = 102782291 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102782291) 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 in 3 ways as a sum of consecutive naturals, for example, 1772080 + ... + 1772137.

It is an arithmetic number, because the mean of its divisors is an integer number (26581635).

Almost surely, 2^102782293 is an apocalyptic number.

It is an amenable number.

102782293 is a deficient number, since it is larger than the sum of its proper divisors (3544247).

102782293 is an equidigital number, since it uses as much as digits as its factorization.

102782293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544246.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 102782293 is about 10138.1602374395. The cubic root of 102782293 is about 468.4243190064.

The spelling of 102782293 in words is "one hundred two million, seven hundred eighty-two thousand, two hundred ninety-three".