20000007 has 16 divisors (see below), whose sum is σ = 31373280. Its totient is φ = 12548736.

The previous prime is 20000003. The next prime is 20000023. The reversal of 20000007 is 70000002.

It is not a de Polignac number, because 20000007 - 2² = 20000003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21328 + ... + 22245.

It is an arithmetic number, because the mean of its divisors is an integer number (1960830).

Almost surely, 2^20000007 is an apocalyptic number.

20000007 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20000007 is a deficient number, since it is larger than the sum of its proper divisors (11373273).

20000007 is a wasteful number, since it uses less digits than its factorization.

20000007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43599 (or 43593 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 9.

The square root of 20000007 is about 4472.1367376233. The cubic root of 20000007 is about 271.4417933277.

Adding to 20000007 its reverse (70000002), we get a palindrome (90000009).

The spelling of 20000007 in words is "twenty million, seven", and thus it is an aban number and an uban number.