20474441 has 4 divisors (see below), whose sum is σ = 22049412. Its totient is φ = 18899472.

The previous prime is 20474429. The next prime is 20474449. The reversal of 20474441 is 14447402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14447402 = 2 ⋅7223701.

It can be written as a sum of positive squares in 2 ways, for example, as 10106041 + 10368400 = 3179^2 + 3220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20474441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20474441.

It is not an unprimeable number, because it can be changed into a prime (20474449) 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 3 ways as a sum of consecutive naturals, for example, 787466 + ... + 787491.

It is an arithmetic number, because the mean of its divisors is an integer number (5512353).

Almost surely, 2^20474441 is an apocalyptic number.

It is an amenable number.

20474441 is a deficient number, since it is larger than the sum of its proper divisors (1574971).

20474441 is a wasteful number, since it uses less digits than its factorization.

20474441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574970.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 20474441 is about 4524.8691693794. The cubic root of 20474441 is about 273.5713946545.

The spelling of 20474441 in words is "twenty million, four hundred seventy-four thousand, four hundred forty-one".