20008441 has 4 divisors (see below), whose sum is σ = 20120400. Its totient is φ = 19896484.

The previous prime is 20008381. The next prime is 20008447. The reversal of 20008441 is 14480002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14480002 = 2 ⋅7240001.

It is a cyclic number.

It is not a de Polignac number, because 20008441 - 2¹⁵ = 19975673 is a prime.

It is a super-2 number, since 2×20008441² = 800675422500962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20008447) 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, 55711 + ... + 56068.

It is an arithmetic number, because the mean of its divisors is an integer number (5030100).

Almost surely, 2^20008441 is an apocalyptic number.

It is an amenable number.

20008441 is a deficient number, since it is larger than the sum of its proper divisors (111959).

20008441 is a wasteful number, since it uses less digits than its factorization.

20008441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111958.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 20008441 is about 4473.0795879349. The cubic root of 20008441 is about 271.4799436203.

Adding to 20008441 its reverse (14480002), we get a palindrome (34488443).

It can be divided in two parts, 20008 and 441, that added together give a square (20449 = 143²).

The spelling of 20008441 in words is "twenty million, eight thousand, four hundred forty-one".