20007105 has 8 divisors (see below), whose sum is σ = 32011392. Its totient is φ = 10670448.

The previous prime is 20007061. The next prime is 20007107. The reversal of 20007105 is 50170002.

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 20007105 - 2⁶ = 20007041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 1333807 = 20007105 / (2 + 0 + 0 + 0 + 7 + 1 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (20007107) 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, 666889 + ... + 666918.

It is an arithmetic number, because the mean of its divisors is an integer number (4001424).

Almost surely, 2^20007105 is an apocalyptic number.

It is an amenable number.

20007105 is a deficient number, since it is larger than the sum of its proper divisors (12004287).

20007105 is a wasteful number, since it uses less digits than its factorization.

20007105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333815.

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 20007105 is about 4472.9302476117. The cubic root of 20007105 is about 271.4739010826.

Adding to 20007105 its reverse (50170002), we get a palindrome (70177107).

The spelling of 20007105 in words is "twenty million, seven thousand, one hundred five".