21416350 has 48 divisors (see below), whose sum is σ = 42247296. Its totient is φ = 8064000.

The previous prime is 21416341. The next prime is 21416383. The reversal of 21416350 is 5361412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63382 + ... + 63718.

It is an arithmetic number, because the mean of its divisors is an integer number (880152).

Almost surely, 2^21416350 is an apocalyptic number.

21416350 is a deficient number, since it is larger than the sum of its proper divisors (20830946).

21416350 is a wasteful number, since it uses less digits than its factorization.

21416350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 21416350 is about 4627.7802454308. The cubic root of 21416350 is about 277.7037974838.

Adding to 21416350 its reverse (5361412), we get a palindrome (26777762).

The spelling of 21416350 in words is "twenty-one million, four hundred sixteen thousand, three hundred fifty".