20482775 has 6 divisors (see below), whose sum is σ = 25398672. Its totient is φ = 16386200.

The previous prime is 20482769. The next prime is 20482783. The reversal of 20482775 is 57728402.

It is not a de Polignac number, because 20482775 - 2¹⁰ = 20481751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 409631 + ... + 409680.

It is an arithmetic number, because the mean of its divisors is an integer number (4233112).

Almost surely, 2^20482775 is an apocalyptic number.

20482775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20482775 is a deficient number, since it is larger than the sum of its proper divisors (4915897).

20482775 is an equidigital number, since it uses as much as digits as its factorization.

20482775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819321 (or 819316 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 20482775 is about 4525.7899862897. The cubic root of 20482775 is about 273.6085081582.

The spelling of 20482775 in words is "twenty million, four hundred eighty-two thousand, seven hundred seventy-five".