20800504 has 16 divisors (see below), whose sum is σ = 40259520. Its totient is φ = 10064640.

The previous prime is 20800501. The next prime is 20800517. The reversal of 20800504 is 40500802.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20800501) 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, 41689 + ... + 42184.

It is an arithmetic number, because the mean of its divisors is an integer number (2516220).

Almost surely, 2^20800504 is an apocalyptic number.

It is an amenable number.

20800504 is a deficient number, since it is larger than the sum of its proper divisors (19459016).

20800504 is a wasteful number, since it uses less digits than its factorization.

20800504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83910 (or 83906 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20800504 is about 4560.7569547171. The cubic root of 20800504 is about 275.0159946620.

The spelling of 20800504 in words is "twenty million, eight hundred thousand, five hundred four".