20782083 has 8 divisors (see below), whose sum is σ = 31667968. Its totient is φ = 11875464.

The previous prime is 20782081. The next prime is 20782093. The reversal of 20782083 is 38028702.

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

It is not a de Polignac number, because 20782083 - 2¹ = 20782081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20782083.

It is not an unprimeable number, because it can be changed into a prime (20782081) 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 7 ways as a sum of consecutive naturals, for example, 494791 + ... + 494832.

It is an arithmetic number, because the mean of its divisors is an integer number (3958496).

Almost surely, 2^20782083 is an apocalyptic number.

20782083 is a deficient number, since it is larger than the sum of its proper divisors (10885885).

20782083 is an equidigital number, since it uses as much as digits as its factorization.

20782083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989633.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20782083 is about 4558.7369961427. The cubic root of 20782083 is about 274.9347856380.

The spelling of 20782083 in words is "twenty million, seven hundred eighty-two thousand, eighty-three".