20103136 has 24 divisors (see below), whose sum is σ = 40650120. Its totient is φ = 9779328.

The previous prime is 20103113. The next prime is 20103137. The reversal of 20103136 is 63130102.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7306 + ... + 9673.

It is an arithmetic number, because the mean of its divisors is an integer number (1693755).

Almost surely, 2^20103136 is an apocalyptic number.

It is an amenable number.

20103136 is an abundant number, since it is smaller than the sum of its proper divisors (20546984).

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

20103136 is a wasteful number, since it uses less digits than its factorization.

20103136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17026 (or 17018 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 20103136 is about 4483.6520828450. The cubic root of 20103136 is about 271.9075522039.

Adding to 20103136 its reverse (63130102), we get a palindrome (83233238).

The spelling of 20103136 in words is "twenty million, one hundred three thousand, one hundred thirty-six".