20803300 has 72 divisors (see below), whose sum is σ = 52246656. Its totient is φ = 7042560.

The previous prime is 20803297. The next prime is 20803301. The reversal of 20803300 is 330802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20803301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78969 + ... + 79231.

It is an arithmetic number, because the mean of its divisors is an integer number (725648).

Almost surely, 2^20803300 is an apocalyptic number.

20803300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20803300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26123328).

20803300 is an abundant number, since it is smaller than the sum of its proper divisors (31443356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20803300 is a wasteful number, since it uses less digits than its factorization.

20803300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20803300 is about 4561.0634724810. The cubic root of 20803300 is about 275.0283166434.

The spelling of 20803300 in words is "twenty million, eight hundred three thousand, three hundred".