21417314 has 8 divisors (see below), whose sum is σ = 34015788. Its totient is φ = 10078720.

The previous prime is 21417307. The next prime is 21417317. The reversal of 21417314 is 41371412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19936225 + 1481089 = 4465^2 + 1217^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21417314.

It is not an unprimeable number, because it can be changed into a prime (21417317) 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, 314927 + ... + 314994.

Almost surely, 2^21417314 is an apocalyptic number.

21417314 is a deficient number, since it is larger than the sum of its proper divisors (12598474).

21417314 is a wasteful number, since it uses less digits than its factorization.

21417314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629940.

The product of its digits is 672, while the sum is 23.

The square root of 21417314 is about 4627.8843978648. The cubic root of 21417314 is about 277.7079641204.

Adding to 21417314 its reverse (41371412), we get a palindrome (62788726).

The spelling of 21417314 in words is "twenty-one million, four hundred seventeen thousand, three hundred fourteen".