20103249 has 4 divisors (see below), whose sum is σ = 26804336. Its totient is φ = 13402164.

The previous prime is 20103241. The next prime is 20103269. The reversal of 20103249 is 94230102.

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 not a de Polignac number, because 20103249 - 2³ = 20103241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20103241) 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, 3350539 + ... + 3350544.

It is an arithmetic number, because the mean of its divisors is an integer number (6701084).

Almost surely, 2^20103249 is an apocalyptic number.

It is an amenable number.

20103249 is a deficient number, since it is larger than the sum of its proper divisors (6701087).

20103249 is an equidigital number, since it uses as much as digits as its factorization.

20103249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6701086.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20103249 is about 4483.6646841618. The cubic root of 20103249 is about 271.9080616683.

The spelling of 20103249 in words is "twenty million, one hundred three thousand, two hundred forty-nine".