20072007 has 24 divisors (see below), whose sum is σ = 29737344. Its totient is φ = 13042944.

The previous prime is 20071991. The next prime is 20072027. The reversal of 20072007 is 70027002.

It is not a de Polignac number, because 20072007 - 2⁴ = 20071991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072027) 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 23 ways as a sum of consecutive naturals, for example, 89898 + ... + 90120.

It is an arithmetic number, because the mean of its divisors is an integer number (1239056).

Almost surely, 2^20072007 is an apocalyptic number.

20072007 is a deficient number, since it is larger than the sum of its proper divisors (9665337).

20072007 is a wasteful number, since it uses less digits than its factorization.

20072007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 436 counting only the distinct ones).

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

The square root of 20072007 is about 4480.1793490886. The cubic root of 20072007 is about 271.7671332697.

Adding to 20072007 its reverse (70027002), we get a palindrome (90099009).

The spelling of 20072007 in words is "twenty million, seventy-two thousand, seven".