20105196 has 24 divisors (see below), whose sum is σ = 47160624. Its totient is φ = 6666240.

The previous prime is 20105191. The next prime is 20105201. The reversal of 20105196 is 69150102.

It is an interprime number because it is at equal distance from previous prime (20105191) and next prime (20105201).

It is not an unprimeable number, because it can be changed into a prime (20105191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2025 + ... + 6656.

It is an arithmetic number, because the mean of its divisors is an integer number (1965026).

Almost surely, 2^20105196 is an apocalyptic number.

It is an amenable number.

20105196 is an abundant number, since it is smaller than the sum of its proper divisors (27055428).

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

20105196 is a wasteful number, since it uses less digits than its factorization.

20105196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8881 (or 8879 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 20105196 is about 4483.8818004046. The cubic root of 20105196 is about 271.9168394851.

Adding to 20105196 its reverse (69150102), we get a palindrome (89255298).

It can be divided in two parts, 20105 and 196, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 20105196 in words is "twenty million, one hundred five thousand, one hundred ninety-six".