21416200 has 48 divisors (see below), whose sum is σ = 53629380. Its totient is φ = 7906560.

The previous prime is 21416183. The next prime is 21416281. The reversal of 21416200 is 261412.

It can be written as a sum of positive squares in 6 ways, for example, as 5207524 + 16208676 = 2282^2 + 4026^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1519 + ... + 6718.

Almost surely, 2^21416200 is an apocalyptic number.

21416200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21416200 is an abundant number, since it is smaller than the sum of its proper divisors (32213180).

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

21416200 is a wasteful number, since it uses less digits than its factorization.

21416200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8266 (or 8257 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21416200 is about 4627.7640389285. The cubic root of 21416200 is about 277.7031491370.

Adding to 21416200 its reverse (261412), we get a palindrome (21677612).

The spelling of 21416200 in words is "twenty-one million, four hundred sixteen thousand, two hundred".