21884714 has 4 divisors (see below), whose sum is σ = 32827074. Its totient is φ = 10942356.

The previous prime is 21884699. The next prime is 21884741. The reversal of 21884714 is 41748812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18705625 + 3179089 = 4325^2 + 1783^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5471177 + ... + 5471180.

Almost surely, 2^21884714 is an apocalyptic number.

21884714 is a deficient number, since it is larger than the sum of its proper divisors (10942360).

21884714 is a wasteful number, since it uses less digits than its factorization.

21884714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10942359.

The product of its digits is 14336, while the sum is 35.

The square root of 21884714 is about 4678.1100884866. The cubic root of 21884714 is about 279.7136272774.

The spelling of 21884714 in words is "twenty-one million, eight hundred eighty-four thousand, seven hundred fourteen".