20041007 has 8 divisors (see below), whose sum is σ = 23021856. Its totient is φ = 17089632.

The previous prime is 20041003. The next prime is 20041031. The reversal of 20041007 is 70014002.

It is a happy number.

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

It is not a de Polignac number, because 20041007 - 2² = 20041003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20040982 and 20041000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20041003) 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, 5888 + ... + 8645.

It is an arithmetic number, because the mean of its divisors is an integer number (2877732).

Almost surely, 2^20041007 is an apocalyptic number.

20041007 is a deficient number, since it is larger than the sum of its proper divisors (2980849).

20041007 is a wasteful number, since it uses less digits than its factorization.

20041007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14737.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 20041007 is about 4476.7183293122. The cubic root of 20041007 is about 271.6271518842.

Adding to 20041007 its reverse (70014002), we get a palindrome (90055009).

The spelling of 20041007 in words is "twenty million, forty-one thousand, seven".