21047714 has 8 divisors (see below), whose sum is σ = 32944320. Its totient is φ = 10066276.

The previous prime is 21047713. The next prime is 21047771. The reversal of 21047714 is 41774012.

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

It is not an unprimeable number, because it can be changed into a prime (21047713) 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, 228734 + ... + 228825.

It is an arithmetic number, because the mean of its divisors is an integer number (4118040).

Almost surely, 2^21047714 is an apocalyptic number.

21047714 is a deficient number, since it is larger than the sum of its proper divisors (11896606).

21047714 is a wasteful number, since it uses less digits than its factorization.

21047714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457584.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 21047714 is about 4587.7787653722. The cubic root of 21047714 is about 276.1012108679.

The spelling of 21047714 in words is "twenty-one million, forty-seven thousand, seven hundred fourteen".