21676414 has 8 divisors (see below), whose sum is σ = 32752368. Its totient is φ = 10758960.

The previous prime is 21676387. The next prime is 21676469. The reversal of 21676414 is 41467612.

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

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 3 ways as a sum of consecutive naturals, for example, 39282 + ... + 39829.

It is an arithmetic number, because the mean of its divisors is an integer number (4094046).

Almost surely, 2^21676414 is an apocalyptic number.

21676414 is a deficient number, since it is larger than the sum of its proper divisors (11075954).

21676414 is a wasteful number, since it uses less digits than its factorization.

21676414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79250.

The product of its digits is 8064, while the sum is 31.

The square root of 21676414 is about 4655.7935950813. The cubic root of 21676414 is about 278.8233531072.

The spelling of 21676414 in words is "twenty-one million, six hundred seventy-six thousand, four hundred fourteen".