20020707 has 12 divisors (see below), whose sum is σ = 33050160. Its totient is φ = 11440368.

The previous prime is 20020691. The next prime is 20020711. The reversal of 20020707 is 70702002.

It is not a de Polignac number, because 20020707 - 2⁴ = 20020691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020707.

It is not an unprimeable number, because it can be changed into a prime (20020207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158832 + ... + 158957.

It is an arithmetic number, because the mean of its divisors is an integer number (2754180).

Almost surely, 2^20020707 is an apocalyptic number.

20020707 is a deficient number, since it is larger than the sum of its proper divisors (13029453).

20020707 is a wasteful number, since it uses less digits than its factorization.

20020707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317802 (or 317799 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 20020707 is about 4474.4504690520. The cubic root of 20020707 is about 271.5354084238.

Adding to 20020707 its reverse (70702002), we get a palindrome (90722709).

The spelling of 20020707 in words is "twenty million, twenty thousand, seven hundred seven".