20103544 has 8 divisors (see below), whose sum is σ = 37694160. Its totient is φ = 10051768.

The previous prime is 20103533. The next prime is 20103547. The reversal of 20103544 is 44530102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256464 + ... + 1256479.

It is an arithmetic number, because the mean of its divisors is an integer number (4711770).

Almost surely, 2^20103544 is an apocalyptic number.

It is an amenable number.

20103544 is a deficient number, since it is larger than the sum of its proper divisors (17590616).

20103544 is a wasteful number, since it uses less digits than its factorization.

20103544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512949 (or 2512945 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20103544 is about 4483.6975812381. The cubic root of 20103544 is about 271.9093916770.

Adding to 20103544 its reverse (44530102), we get a palindrome (64633646).

The spelling of 20103544 in words is "twenty million, one hundred three thousand, five hundred forty-four".