20838700 has 18 divisors (see below), whose sum is σ = 45220196. Its totient is φ = 8335440.

The previous prime is 20838689. The next prime is 20838707. The reversal of 20838700 is 783802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20838707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104094 + ... + 104293.

Almost surely, 2^20838700 is an apocalyptic number.

20838700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20838700 is an abundant number, since it is smaller than the sum of its proper divisors (24381496).

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

20838700 is a wasteful number, since it uses less digits than its factorization.

20838700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208401 (or 208394 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20838700 is about 4564.9424968996. The cubic root of 20838700 is about 275.1842291699.

The spelling of 20838700 in words is "twenty million, eight hundred thirty-eight thousand, seven hundred".