20338903 has 8 divisors (see below), whose sum is σ = 22150800. Its totient is φ = 18562368.

The previous prime is 20338867. The next prime is 20338933. The reversal of 20338903 is 30983302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20338903 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 (20338933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7633 + ... + 9946.

It is an arithmetic number, because the mean of its divisors is an integer number (2768850).

Almost surely, 2^20338903 is an apocalyptic number.

20338903 is a deficient number, since it is larger than the sum of its proper divisors (1811897).

20338903 is a wasteful number, since it uses less digits than its factorization.

20338903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17681.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 20338903 is about 4509.8672929478. The cubic root of 20338903 is about 272.9663892571.

The spelling of 20338903 in words is "twenty million, three hundred thirty-eight thousand, nine hundred three".