20345841 has 6 divisors (see below), whose sum is σ = 29388450. Its totient is φ = 13563888.

The previous prime is 20345839. The next prime is 20345863. The reversal of 20345841 is 14854302.

20345841 is a `hidden beast` number, since 203 + 458 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19395216 + 950625 = 4404^2 + 975^2 .

It is not a de Polignac number, because 20345841 - 2¹ = 20345839 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20345441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1130316 + ... + 1130333.

It is an arithmetic number, because the mean of its divisors is an integer number (4898075).

Almost surely, 2^20345841 is an apocalyptic number.

It is an amenable number.

20345841 is a deficient number, since it is larger than the sum of its proper divisors (9042609).

20345841 is a wasteful number, since it uses less digits than its factorization.

20345841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260655 (or 2260652 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20345841 is about 4510.6364295962. The cubic root of 20345841 is about 272.9974237973.

It can be divided in two parts, 2034 and 5841, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 20345841 in words is "twenty million, three hundred forty-five thousand, eight hundred forty-one".