21436314 has 16 divisors (see below), whose sum is σ = 44256000. Its totient is φ = 6914880.

The previous prime is 21436301. The next prime is 21436319. The reversal of 21436314 is 41363412.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (21436319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57439 + ... + 57810.

It is an arithmetic number, because the mean of its divisors is an integer number (2766000).

Almost surely, 2^21436314 is an apocalyptic number.

21436314 is an abundant number, since it is smaller than the sum of its proper divisors (22819686).

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

21436314 is a wasteful number, since it uses less digits than its factorization.

21436314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115285.

The product of its digits is 1728, while the sum is 24.

The square root of 21436314 is about 4629.9367166302. The cubic root of 21436314 is about 277.7900611220.

Adding to 21436314 its reverse (41363412), we get a palindrome (62799726).

The spelling of 21436314 in words is "twenty-one million, four hundred thirty-six thousand, three hundred fourteen".