21198714 has 8 divisors (see below), whose sum is σ = 42397440. Its totient is φ = 7066236.

The previous prime is 21198701. The next prime is 21198719. The reversal of 21198714 is 41789112.

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

21198714 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21198719) 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, 1766554 + ... + 1766565.

It is an arithmetic number, because the mean of its divisors is an integer number (5299680).

Almost surely, 2^21198714 is an apocalyptic number.

21198714 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21198714 is a wasteful number, since it uses less digits than its factorization.

21198714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533124.

The product of its digits is 4032, while the sum is 33.

The square root of 21198714 is about 4604.2061204946. The cubic root of 21198714 is about 276.7599043825.

It can be divided in two parts, 21198 and 714, that added together give a palindrome (21912).

The spelling of 21198714 in words is "twenty-one million, one hundred ninety-eight thousand, seven hundred fourteen".