20580903 has 12 divisors (see below), whose sum is σ = 33974928. Its totient is φ = 11760480.

The previous prime is 20580899. The next prime is 20580919. The reversal of 20580903 is 30908502.

It is not a de Polignac number, because 20580903 - 2² = 20580899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20580953) 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 in 11 ways as a sum of consecutive naturals, for example, 163278 + ... + 163403.

It is an arithmetic number, because the mean of its divisors is an integer number (2831244).

Almost surely, 2^20580903 is an apocalyptic number.

20580903 is a deficient number, since it is larger than the sum of its proper divisors (13394025).

20580903 is a wasteful number, since it uses less digits than its factorization.

20580903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326694 (or 326691 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 20580903 is about 4536.6180134545. The cubic root of 20580903 is about 274.0447429020.

The spelling of 20580903 in words is "twenty million, five hundred eighty thousand, nine hundred three".