20282765 has 4 divisors (see below), whose sum is σ = 24339324. Its totient is φ = 16226208.

The previous prime is 20282753. The next prime is 20282777. The reversal of 20282765 is 56728202.

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

It is an interprime number because it is at equal distance from previous prime (20282753) and next prime (20282777).

It can be written as a sum of positive squares in 2 ways, for example, as 10023556 + 10259209 = 3166^2 + 3203^2 .

It is a cyclic number.

It is not a de Polignac number, because 20282765 - 2⁴ = 20282749 is a prime.

It is a super-2 number, since 2×20282765² = 822781112090450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2028272 + ... + 2028281.

It is an arithmetic number, because the mean of its divisors is an integer number (6084831).

Almost surely, 2^20282765 is an apocalyptic number.

It is an amenable number.

20282765 is a deficient number, since it is larger than the sum of its proper divisors (4056559).

20282765 is an equidigital number, since it uses as much as digits as its factorization.

20282765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056558.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 20282765 is about 4503.6390841185. The cubic root of 20282765 is about 272.7150170082.

The spelling of 20282765 in words is "twenty million, two hundred eighty-two thousand, seven hundred sixty-five".