21412414 has 8 divisors (see below), whose sum is σ = 32902128. Its totient is φ = 10445040.

The previous prime is 21412387. The next prime is 21412429. The reversal of 21412414 is 41421412.

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

It is a junction number, because it is equal to n+sod(n) for n = 21412391 and 21412400.

It is a congruent number.

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, 130482 + ... + 130645.

It is an arithmetic number, because the mean of its divisors is an integer number (4112766).

Almost surely, 2^21412414 is an apocalyptic number.

21412414 is a deficient number, since it is larger than the sum of its proper divisors (11489714).

21412414 is a wasteful number, since it uses less digits than its factorization.

21412414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261170.

The product of its digits is 256, while the sum is 19.

The square root of 21412414 is about 4627.3549680136. The cubic root of 21412414 is about 277.6867838608.

Adding to 21412414 its reverse (41421412), we get a palindrome (62833826).

The spelling of 21412414 in words is "twenty-one million, four hundred twelve thousand, four hundred fourteen".