20827103 has 4 divisors (see below), whose sum is σ = 22720488. Its totient is φ = 18933720.

The previous prime is 20827099. The next prime is 20827117. The reversal of 20827103 is 30172802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20827103 - 2² = 20827099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20827123) 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, 946676 + ... + 946697.

It is an arithmetic number, because the mean of its divisors is an integer number (5680122).

Almost surely, 2^20827103 is an apocalyptic number.

20827103 is a deficient number, since it is larger than the sum of its proper divisors (1893385).

20827103 is a wasteful number, since it uses less digits than its factorization.

20827103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893384.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20827103 is about 4563.6720960209. The cubic root of 20827103 is about 275.1331718632.

Adding to 20827103 its reverse (30172802), we get a palindrome (50999905).

The spelling of 20827103 in words is "twenty million, eight hundred twenty-seven thousand, one hundred three".