21030614 has 8 divisors (see below), whose sum is σ = 34413768. Its totient is φ = 9559360.

The previous prime is 21030613. The next prime is 21030619. The reversal of 21030614 is 41603012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21030592 and 21030601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030613) 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, 477947 + ... + 477990.

It is an arithmetic number, because the mean of its divisors is an integer number (4301721).

Almost surely, 2^21030614 is an apocalyptic number.

21030614 is a deficient number, since it is larger than the sum of its proper divisors (13383154).

21030614 is a wasteful number, since it uses less digits than its factorization.

21030614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955950.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 21030614 is about 4585.9147397221. The cubic root of 21030614 is about 276.0264187412.

Adding to 21030614 its reverse (41603012), we get a palindrome (62633626).

The spelling of 21030614 in words is "twenty-one million, thirty thousand, six hundred fourteen".