20520110 has 32 divisors (see below), whose sum is σ = 41156640. Its totient is φ = 7314048.

The previous prime is 20520103. The next prime is 20520161. The reversal of 20520110 is 1102502.

It is a junction number, because it is equal to n+sod(n) for n = 20520091 and 20520100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049 + ... + 6491.

It is an arithmetic number, because the mean of its divisors is an integer number (1286145).

Almost surely, 2^20520110 is an apocalyptic number.

20520110 is an abundant number, since it is smaller than the sum of its proper divisors (20636530).

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

20520110 is a wasteful number, since it uses less digits than its factorization.

20520110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5492.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 20520110 is about 4529.9128026928. The cubic root of 20520110 is about 273.7746473224.

Adding to 20520110 its reverse (1102502), we get a palindrome (21622612).

The spelling of 20520110 in words is "twenty million, five hundred twenty thousand, one hundred ten".