20040671 has 8 divisors (see below), whose sum is σ = 24251040. Its totient is φ = 16167168.

The previous prime is 20040667. The next prime is 20040679. The reversal of 20040671 is 17604002.

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 20040671 - 2² = 20040667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040679) 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, 84086 + ... + 84323.

It is an arithmetic number, because the mean of its divisors is an integer number (3031380).

Almost surely, 2^20040671 is an apocalyptic number.

20040671 is a deficient number, since it is larger than the sum of its proper divisors (4210369).

20040671 is a wasteful number, since it uses less digits than its factorization.

20040671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168433.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20040671 is about 4476.6808016654. The cubic root of 20040671 is about 271.6256338761.

Adding to 20040671 its reverse (17604002), we get a palindrome (37644673).

The spelling of 20040671 in words is "twenty million, forty thousand, six hundred seventy-one".