21230014 has 8 divisors (see below), whose sum is σ = 34294680. Its totient is φ = 9798456.

The previous prime is 21229979. The next prime is 21230017. The reversal of 21230014 is 41003212.

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

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 21229976 and 21230003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230017) 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, 408244 + ... + 408295.

It is an arithmetic number, because the mean of its divisors is an integer number (4286835).

Almost surely, 2^21230014 is an apocalyptic number.

21230014 is a deficient number, since it is larger than the sum of its proper divisors (13064666).

21230014 is a wasteful number, since it uses less digits than its factorization.

21230014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816554.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21230014 is about 4607.6039326314. The cubic root of 21230014 is about 276.8960498275.

Adding to 21230014 its reverse (41003212), we get a palindrome (62233226).

The spelling of 21230014 in words is "twenty-one million, two hundred thirty thousand, fourteen".