20775303 has 12 divisors (see below), whose sum is σ = 31588440. Its totient is φ = 13121136.

The previous prime is 20775299. The next prime is 20775317. The reversal of 20775303 is 30357702.

It is not a de Polignac number, because 20775303 - 2² = 20775299 is a prime.

It is a super-2 number, since 2×20775303² = 863226429483618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20775383) 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 11 ways as a sum of consecutive naturals, for example, 60576 + ... + 60917.

It is an arithmetic number, because the mean of its divisors is an integer number (2632370).

Almost surely, 2^20775303 is an apocalyptic number.

20775303 is a deficient number, since it is larger than the sum of its proper divisors (10813137).

20775303 is a wasteful number, since it uses less digits than its factorization.

20775303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121518 (or 121515 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 20775303 is about 4557.9933084637. The cubic root of 20775303 is about 274.9048839098.

The spelling of 20775303 in words is "twenty million, seven hundred seventy-five thousand, three hundred three".