20368387 has 16 divisors (see below), whose sum is σ = 22543360. Its totient is φ = 18398016.

The previous prime is 20368373. The next prime is 20368417. The reversal of 20368387 is 78386302.

It is not a de Polignac number, because 20368387 - 2⁷ = 20368259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20368307) 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, 160318 + ... + 160444.

It is an arithmetic number, because the mean of its divisors is an integer number (1408960).

Almost surely, 2^20368387 is an apocalyptic number.

20368387 is a deficient number, since it is larger than the sum of its proper divisors (2174973).

20368387 is an equidigital number, since it uses as much as digits as its factorization.

20368387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 20368387 is about 4513.1349414791. The cubic root of 20368387 is about 273.0982261805.

The spelling of 20368387 in words is "twenty million, three hundred sixty-eight thousand, three hundred eighty-seven".