20103893 has 4 divisors (see below), whose sum is σ = 20159040. Its totient is φ = 20048748.

The previous prime is 20103871. The next prime is 20103917. The reversal of 20103893 is 39830102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20103893 - 2⁸ = 20103637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103803) 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, 27023 + ... + 27756.

It is an arithmetic number, because the mean of its divisors is an integer number (5039760).

Almost surely, 2^20103893 is an apocalyptic number.

It is an amenable number.

20103893 is a deficient number, since it is larger than the sum of its proper divisors (55147).

20103893 is an equidigital number, since it uses as much as digits as its factorization.

20103893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55146.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20103893 is about 4483.7364998403. The cubic root of 20103893 is about 271.9109651281.

Adding to 20103893 its reverse (39830102), we get a palindrome (59933995).

The spelling of 20103893 in words is "twenty million, one hundred three thousand, eight hundred ninety-three".