20816082 has 48 divisors (see below), whose sum is σ = 53817120. Its totient is φ = 5946696.

The previous prime is 20816071. The next prime is 20816083. The reversal of 20816082 is 28061802.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20816083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1288 + ... + 6579.

It is an arithmetic number, because the mean of its divisors is an integer number (1121190).

Almost surely, 2^20816082 is an apocalyptic number.

20816082 is an abundant number, since it is smaller than the sum of its proper divisors (33001038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20816082 is a wasteful number, since it uses less digits than its factorization.

20816082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7892 (or 7879 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 20816082 is about 4562.4644656150. The cubic root of 20816082 is about 275.0846329042.

Adding to 20816082 its reverse (28061802), we get a palindrome (48877884).

It can be divided in two parts, 208 and 16082, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 20816082 in words is "twenty million, eight hundred sixteen thousand, eighty-two".