20005300 has 36 divisors (see below), whose sum is σ = 49614880. Its totient is φ = 6858720.

The previous prime is 20005291. The next prime is 20005301. The reversal of 20005300 is 350002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13590 + ... + 14989.

Almost surely, 2^20005300 is an apocalyptic number.

20005300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20005300 is an abundant number, since it is smaller than the sum of its proper divisors (29609580).

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

20005300 is a wasteful number, since it uses less digits than its factorization.

20005300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28600 (or 28593 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 10.

The square root of 20005300 is about 4472.7284737618. The cubic root of 20005300 is about 271.4657368974.

Adding to 20005300 its reverse (350002), we get a palindrome (20355302).

The spelling of 20005300 in words is "twenty million, five thousand, three hundred".