21316414 has 8 divisors (see below), whose sum is σ = 36542448. Its totient is φ = 9135600.

The previous prime is 21316397. The next prime is 21316417. The reversal of 21316414 is 41461312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21316417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761287 + ... + 761314.

It is an arithmetic number, because the mean of its divisors is an integer number (4567806).

Almost surely, 2^21316414 is an apocalyptic number.

21316414 is a deficient number, since it is larger than the sum of its proper divisors (15226034).

21316414 is a wasteful number, since it uses less digits than its factorization.

21316414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522610.

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

The square root of 21316414 is about 4616.9702186607. The cubic root of 21316414 is about 277.2711702827.

Adding to 21316414 its reverse (41461312), we get a palindrome (62777726).

The spelling of 21316414 in words is "twenty-one million, three hundred sixteen thousand, four hundred fourteen".