21984014 has 16 divisors (see below), whose sum is σ = 36015840. Its totient is φ = 10002720.

The previous prime is 21983999. The next prime is 21984073. The reversal of 21984014 is 41048912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4109 + ... + 7800.

It is an arithmetic number, because the mean of its divisors is an integer number (2250990).

Almost surely, 2^21984014 is an apocalyptic number.

21984014 is a deficient number, since it is larger than the sum of its proper divisors (14031826).

21984014 is a wasteful number, since it uses less digits than its factorization.

21984014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11995.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 21984014 is about 4688.7113368174. The cubic root of 21984014 is about 280.1360478313.

The spelling of 21984014 in words is "twenty-one million, nine hundred eighty-four thousand, fourteen".