20004641 has 8 divisors (see below), whose sum is σ = 21548544. Its totient is φ = 18516960.

The previous prime is 20004583. The next prime is 20004667. The reversal of 20004641 is 14640002.

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 20004641 - 2¹⁴ = 19988257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20004041) 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, 13316 + ... + 14741.

It is an arithmetic number, because the mean of its divisors is an integer number (2693568).

Almost surely, 2^20004641 is an apocalyptic number.

It is an amenable number.

20004641 is a deficient number, since it is larger than the sum of its proper divisors (1543903).

20004641 is a wasteful number, since it uses less digits than its factorization.

20004641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28111.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20004641 is about 4472.6548044757. The cubic root of 20004641 is about 271.4627560559.

Adding to 20004641 its reverse (14640002), we get a palindrome (34644643).

The spelling of 20004641 in words is "twenty million, four thousand, six hundred forty-one".