21614345 has 8 divisors (see below), whose sum is σ = 26136000. Its totient is φ = 17158960.

The previous prime is 21614261. The next prime is 21614357. The reversal of 21614345 is 54341612.

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

It is not a de Polignac number, because 21614345 - 2¹⁰ = 21613321 is a prime.

It is an alternating number because its digits alternate between even and odd.

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, 15845 + ... + 17154.

It is an arithmetic number, because the mean of its divisors is an integer number (3267000).

Almost surely, 2^21614345 is an apocalyptic number.

It is an amenable number.

21614345 is a deficient number, since it is larger than the sum of its proper divisors (4521655).

21614345 is a wasteful number, since it uses less digits than its factorization.

21614345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33135.

The product of its digits is 2880, while the sum is 26.

The square root of 21614345 is about 4649.1230355842. The cubic root of 21614345 is about 278.5569678477.

Adding to 21614345 its reverse (54341612), we get a palindrome (75955957).

The spelling of 21614345 in words is "twenty-one million, six hundred fourteen thousand, three hundred forty-five".