20108810 has 8 divisors (see below), whose sum is σ = 36195876. Its totient is φ = 8043520.

The previous prime is 20108789. The next prime is 20108813. The reversal of 20108810 is 1880102.

It can be written as a sum of positive squares in 2 ways, for example, as 19245769 + 863041 = 4387^2 + 929^2 .

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

It is a super-2 number, since 2×20108810² = 808728479232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20108813) 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 3 ways as a sum of consecutive naturals, for example, 1005431 + ... + 1005450.

Almost surely, 2^20108810 is an apocalyptic number.

20108810 is a deficient number, since it is larger than the sum of its proper divisors (16087066).

20108810 is a wasteful number, since it uses less digits than its factorization.

20108810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010888.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 20108810 is about 4484.2847813224. The cubic root of 20108810 is about 271.9331312699.

Adding to 20108810 its reverse (1880102), we get a palindrome (21988912).

The spelling of 20108810 in words is "twenty million, one hundred eight thousand, eight hundred ten".