20300887 has 4 divisors (see below), whose sum is σ = 20545560. Its totient is φ = 20056216.

The previous prime is 20300879. The next prime is 20300947. The reversal of 20300887 is 78800302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20300887 - 2³ = 20300879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300807) 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 in 3 ways as a sum of consecutive naturals, for example, 122212 + ... + 122377.

It is an arithmetic number, because the mean of its divisors is an integer number (5136390).

Almost surely, 2^20300887 is an apocalyptic number.

20300887 is a deficient number, since it is larger than the sum of its proper divisors (244673).

20300887 is an equidigital number, since it uses as much as digits as its factorization.

20300887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244672.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20300887 is about 4505.6505634592. The cubic root of 20300887 is about 272.7962135378.

The spelling of 20300887 in words is "twenty million, three hundred thousand, eight hundred eighty-seven".