20680300 has 18 divisors (see below), whose sum is σ = 44876468. Its totient is φ = 8272080.

The previous prime is 20680271. The next prime is 20680333. The reversal of 20680300 is 308602.

It is a super-3 number, since 3×20680300³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103302 + ... + 103501.

Almost surely, 2^20680300 is an apocalyptic number.

20680300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20680300 is an abundant number, since it is smaller than the sum of its proper divisors (24196168).

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

20680300 is a wasteful number, since it uses less digits than its factorization.

20680300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206817 (or 206810 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20680300 is about 4547.5597852035. The cubic root of 20680300 is about 274.4852077235.

Adding to 20680300 its reverse (308602), we get a palindrome (20988902).

The spelling of 20680300 in words is "twenty million, six hundred eighty thousand, three hundred".