20047841 has 8 divisors (see below), whose sum is σ = 22076064. Its totient is φ = 18053920.

The previous prime is 20047823. The next prime is 20047861. The reversal of 20047841 is 14874002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20047841 - 2¹⁸ = 19785697 is a prime.

It is a super-2 number, since 2×20047841² = 803831857522562, which contains 22 as substring.

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 20047841.

It is not an unprimeable number, because it can be changed into a prime (20047861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7340 + ... + 9693.

It is an arithmetic number, because the mean of its divisors is an integer number (2759508).

Almost surely, 2^20047841 is an apocalyptic number.

It is an amenable number.

20047841 is a deficient number, since it is larger than the sum of its proper divisors (2028223).

20047841 is a wasteful number, since it uses less digits than its factorization.

20047841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17151.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 20047841 is about 4477.4815465840. The cubic root of 20047841 is about 271.6580234034.

The spelling of 20047841 in words is "twenty million, forty-seven thousand, eight hundred forty-one".