20908082 has 8 divisors (see below), whose sum is σ = 33774636. Its totient is φ = 9649872.

The previous prime is 20908021. The next prime is 20908099. The reversal of 20908082 is 28080902.

It can be written as a sum of positive squares in 2 ways, for example, as 15295921 + 5612161 = 3911^2 + 2369^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 402053 + ... + 402104.

Almost surely, 2^20908082 is an apocalyptic number.

20908082 is a deficient number, since it is larger than the sum of its proper divisors (12866554).

20908082 is a wasteful number, since it uses less digits than its factorization.

20908082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804172.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 20908082 is about 4572.5356204189. The cubic root of 20908082 is about 275.4892974895.

Adding to 20908082 its reverse (28080902), we get a palindrome (48988984).

The spelling of 20908082 in words is "twenty million, nine hundred eight thousand, eighty-two".