20386983 has 8 divisors (see below), whose sum is σ = 27271296. Its totient is φ = 13547000.

The previous prime is 20386969. The next prime is 20386999. The reversal of 20386983 is 38968302.

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

It is a cyclic number.

It is not a de Polignac number, because 20386983 - 2⁴ = 20386967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20386903) 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 7 ways as a sum of consecutive naturals, for example, 9993 + ... + 11858.

It is an arithmetic number, because the mean of its divisors is an integer number (3408912).

Almost surely, 2^20386983 is an apocalyptic number.

20386983 is a deficient number, since it is larger than the sum of its proper divisors (6884313).

20386983 is a wasteful number, since it uses less digits than its factorization.

20386983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22165.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 20386983 is about 4515.1946801882. The cubic root of 20386983 is about 273.1813122861.

The spelling of 20386983 in words is "twenty million, three hundred eighty-six thousand, nine hundred eighty-three".