21368200 has 48 divisors (see below), whose sum is σ = 56782080. Its totient is φ = 7325760.

The previous prime is 21368189. The next prime is 21368209. The reversal of 21368200 is 286312.

It is not an unprimeable number, because it can be changed into a prime (21368209) 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, 6232 + ... + 9031.

It is an arithmetic number, because the mean of its divisors is an integer number (1182960).

Almost surely, 2^21368200 is an apocalyptic number.

21368200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21368200 is an abundant number, since it is smaller than the sum of its proper divisors (35413880).

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

21368200 is a wasteful number, since it uses less digits than its factorization.

21368200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15286 (or 15277 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 21368200 is about 4622.5750399534. The cubic root of 21368200 is about 277.4955224773.

The spelling of 21368200 in words is "twenty-one million, three hundred sixty-eight thousand, two hundred".