20105150 has 24 divisors (see below), whose sum is σ = 40273464. Its totient is φ = 7423200.

The previous prime is 20105147. The next prime is 20105191. The reversal of 20105150 is 5150102.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14816 + ... + 16115.

It is an arithmetic number, because the mean of its divisors is an integer number (1678061).

Almost surely, 2^20105150 is an apocalyptic number.

20105150 is an abundant number, since it is smaller than the sum of its proper divisors (20168314).

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

20105150 is a wasteful number, since it uses less digits than its factorization.

20105150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30956 (or 30951 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 20105150 is about 4483.8766709177. The cubic root of 20105150 is about 271.9166321061.

Adding to 20105150 its reverse (5150102), we get a palindrome (25255252).

The spelling of 20105150 in words is "twenty million, one hundred five thousand, one hundred fifty".