21336200 has 24 divisors (see below), whose sum is σ = 49607130. Its totient is φ = 8534400.

The previous prime is 21336197. The next prime is 21336223. The reversal of 21336200 is 263312.

It can be written as a sum of positive squares in 3 ways, for example, as 8988004 + 12348196 = 2998^2 + 3514^2 .

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, 53141 + ... + 53540.

Almost surely, 2^21336200 is an apocalyptic number.

21336200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21336200 is an abundant number, since it is smaller than the sum of its proper divisors (28270930).

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

21336200 is a wasteful number, since it uses less digits than its factorization.

21336200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106697 (or 106688 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 21336200 is about 4619.1124688624. The cubic root of 21336200 is about 277.3569319067.

Adding to 21336200 its reverse (263312), we get a palindrome (21599512).

The spelling of 21336200 in words is "twenty-one million, three hundred thirty-six thousand, two hundred".