20305300 has 36 divisors (see below), whose sum is σ = 46385920. Its totient is φ = 7693920.

The previous prime is 20305277. The next prime is 20305321. The reversal of 20305300 is 350302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3444 + ... + 7243.

Almost surely, 2^20305300 is an apocalyptic number.

20305300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20305300 is an abundant number, since it is smaller than the sum of its proper divisors (26080620).

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

20305300 is a wasteful number, since it uses less digits than its factorization.

20305300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10720 (or 10713 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 13.

The square root of 20305300 is about 4506.1402552517. The cubic root of 20305300 is about 272.8159788888.

Adding to 20305300 its reverse (350302), we get a palindrome (20655602).

The spelling of 20305300 in words is "twenty million, three hundred five thousand, three hundred".