20483641 has 4 divisors (see below), whose sum is σ = 20983284. Its totient is φ = 19984000.

The previous prime is 20483627. The next prime is 20483677. The reversal of 20483641 is 14638402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14638402 = 2 ⋅7319201.

It can be written as a sum of positive squares in 2 ways, for example, as 4515625 + 15968016 = 2125^2 + 3996^2 .

It is a cyclic number.

It is not a de Polignac number, because 20483641 - 2⁷ = 20483513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20483621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249760 + ... + 249841.

It is an arithmetic number, because the mean of its divisors is an integer number (5245821).

Almost surely, 2^20483641 is an apocalyptic number.

It is an amenable number.

20483641 is a deficient number, since it is larger than the sum of its proper divisors (499643).

20483641 is an equidigital number, since it uses as much as digits as its factorization.

20483641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499642.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20483641 is about 4525.8856591832. The cubic root of 20483641 is about 273.6123641076.

It can be divided in two parts, 204 and 83641, that added together give a triangular number (83845 = T₄₀₉).

The spelling of 20483641 in words is "twenty million, four hundred eighty-three thousand, six hundred forty-one".