20281041 has 12 divisors (see below), whose sum is σ = 31958160. Its totient is φ = 12291480.

The previous prime is 20281039. The next prime is 20281043. The reversal of 20281041 is 14018202.

It is an interprime number because it is at equal distance from previous prime (20281039) and next prime (20281043).

It is not a de Polignac number, because 20281041 - 2¹ = 20281039 is a prime.

It is a super-2 number, since 2×20281041² = 822641248087362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20281043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102331 + ... + 102528.

It is an arithmetic number, because the mean of its divisors is an integer number (2663180).

Almost surely, 2^20281041 is an apocalyptic number.

It is an amenable number.

20281041 is a deficient number, since it is larger than the sum of its proper divisors (11677119).

20281041 is a wasteful number, since it uses less digits than its factorization.

20281041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204876 (or 204873 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 20281041 is about 4503.4476792786. The cubic root of 20281041 is about 272.7072900208.

Adding to 20281041 its reverse (14018202), we get a palindrome (34299243).

The spelling of 20281041 in words is "twenty million, two hundred eighty-one thousand, forty-one".