20683500 has 48 divisors (see below), whose sum is σ = 60234720. Its totient is φ = 5515200.

The previous prime is 20683493. The next prime is 20683529. The reversal of 20683500 is 538602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5395 + ... + 8394.

It is an arithmetic number, because the mean of its divisors is an integer number (1254890).

Almost surely, 2^20683500 is an apocalyptic number.

20683500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20683500 is an abundant number, since it is smaller than the sum of its proper divisors (39551220).

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

20683500 is a wasteful number, since it uses less digits than its factorization.

20683500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13811 (or 13799 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20683500 is about 4547.9116086397. The cubic root of 20683500 is about 274.4993646324.

The spelling of 20683500 in words is "twenty million, six hundred eighty-three thousand, five hundred".