20950600 has 96 divisors (see below), whose sum is σ = 54237600. Its totient is φ = 7462400.

The previous prime is 20950591. The next prime is 20950603. The reversal of 20950600 is 605902.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20950603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195747 + ... + 195853.

It is an arithmetic number, because the mean of its divisors is an integer number (564975).

Almost surely, 2^20950600 is an apocalyptic number.

20950600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20950600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27118800).

20950600 is an abundant number, since it is smaller than the sum of its proper divisors (33287000).

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

20950600 is a wasteful number, since it uses less digits than its factorization.

20950600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 20950600 is about 4577.1825395105. The cubic root of 20950600 is about 275.6759130928.

The spelling of 20950600 in words is "twenty million, nine hundred fifty thousand, six hundred".