20331082 has 16 divisors (see below), whose sum is σ = 32388552. Its totient is φ = 9538560.

The previous prime is 20331079. The next prime is 20331107. The reversal of 20331082 is 28013302.

It is a happy number.

It is a Cunningham number, because it is equal to 4509²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 15832441 + 4498641 = 3979^2 + 2121^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14032 + ... + 15412.

Almost surely, 2^20331082 is an apocalyptic number.

20331082 is a deficient number, since it is larger than the sum of its proper divisors (12057470).

20331082 is a wasteful number, since it uses less digits than its factorization.

20331082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20331082 is about 4509.0001108893. Note that the first 3 decimals coincide. The cubic root of 20331082 is about 272.9313964844.

Adding to 20331082 its reverse (28013302), we get a palindrome (48344384).

The spelling of 20331082 in words is "twenty million, three hundred thirty-one thousand, eighty-two".