20082845 has 4 divisors (see below), whose sum is σ = 24099420. Its totient is φ = 16066272.

The previous prime is 20082817. The next prime is 20082851. The reversal of 20082845 is 54828002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54828002 = 2 ⋅27414001.

It can be written as a sum of positive squares in 2 ways, for example, as 2951524 + 17131321 = 1718^2 + 4139^2 .

It is a cyclic number.

It is not a de Polignac number, because 20082845 - 2¹⁰ = 20081821 is a prime.

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, 2008280 + ... + 2008289.

It is an arithmetic number, because the mean of its divisors is an integer number (6024855).

Almost surely, 2^20082845 is an apocalyptic number.

It is an amenable number.

20082845 is a deficient number, since it is larger than the sum of its proper divisors (4016575).

20082845 is an equidigital number, since it uses as much as digits as its factorization.

20082845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016574.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 20082845 is about 4481.3887356488. The cubic root of 20082845 is about 271.8160385638.

The spelling of 20082845 in words is "twenty million, eighty-two thousand, eight hundred forty-five".