21045314 has 16 divisors (see below), whose sum is σ = 32302368. Its totient is φ = 10280832.

The previous prime is 21045301. The next prime is 21045317. The reversal of 21045314 is 41354012.

It is not an unprimeable number, because it can be changed into a prime (21045317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15449 + ... + 16755.

It is an arithmetic number, because the mean of its divisors is an integer number (2018898).

Almost surely, 2^21045314 is an apocalyptic number.

21045314 is a deficient number, since it is larger than the sum of its proper divisors (11257054).

21045314 is a wasteful number, since it uses less digits than its factorization.

21045314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 21045314 is about 4587.5171934283. The cubic root of 21045314 is about 276.0907161717.

Adding to 21045314 its reverse (41354012), we get a palindrome (62399326).

The spelling of 21045314 in words is "twenty-one million, forty-five thousand, three hundred fourteen".