21671314 has 8 divisors (see below), whose sum is σ = 37150848. Its totient is φ = 9287700.

The previous prime is 21671297. The next prime is 21671327. The reversal of 21671314 is 41317612.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773962 + ... + 773989.

It is an arithmetic number, because the mean of its divisors is an integer number (4643856).

Almost surely, 2^21671314 is an apocalyptic number.

21671314 is a deficient number, since it is larger than the sum of its proper divisors (15479534).

21671314 is a wasteful number, since it uses less digits than its factorization.

21671314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547960.

The product of its digits is 1008, while the sum is 25.

The square root of 21671314 is about 4655.2458581690. The cubic root of 21671314 is about 278.8014843203.

Adding to 21671314 its reverse (41317612), we get a palindrome (62988926).

It can be divided in two parts, 2167 and 1314, that added together give a square (3481 = 59²).

The spelling of 21671314 in words is "twenty-one million, six hundred seventy-one thousand, three hundred fourteen".