20007868 has 6 divisors (see below), whose sum is σ = 35013776. Its totient is φ = 10003932.

The previous prime is 20007863. The next prime is 20007881. The reversal of 20007868 is 86870002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20007863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500980 + ... + 2500987.

Almost surely, 2^20007868 is an apocalyptic number.

It is an amenable number.

20007868 is a deficient number, since it is larger than the sum of its proper divisors (15005908).

20007868 is a wasteful number, since it uses less digits than its factorization.

20007868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001971 (or 5001969 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 20007868 is about 4473.0155376435. The cubic root of 20007868 is about 271.4773520558.

The spelling of 20007868 in words is "twenty million, seven thousand, eight hundred sixty-eight".