20008887 has 8 divisors (see below), whose sum is σ = 27246336. Its totient is φ = 13055352.

The previous prime is 20008871. The next prime is 20008903. The reversal of 20008887 is 78880002.

It is an interprime number because it is at equal distance from previous prime (20008871) and next prime (20008903).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20008887 - 2⁴ = 20008871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20008817) 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, 70813 + ... + 71094.

It is an arithmetic number, because the mean of its divisors is an integer number (3405792).

Almost surely, 2^20008887 is an apocalyptic number.

20008887 is a deficient number, since it is larger than the sum of its proper divisors (7237449).

20008887 is a wasteful number, since it uses less digits than its factorization.

20008887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141957.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 20008887 is about 4473.1294414537. The cubic root of 20008887 is about 271.4819607549.

Adding to 20008887 its reverse (78880002), we get a palindrome (98888889).

The spelling of 20008887 in words is "twenty million, eight thousand, eight hundred eighty-seven".