21360514 has 16 divisors (see below), whose sum is σ = 38210688. Its totient is φ = 8756352.

The previous prime is 21360487. The next prime is 21360523. The reversal of 21360514 is 41506312.

It is an unprimeable number.

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, 32847 + ... + 33490.

It is an arithmetic number, because the mean of its divisors is an integer number (2388168).

Almost surely, 2^21360514 is an apocalyptic number.

21360514 is a deficient number, since it is larger than the sum of its proper divisors (16850174).

21360514 is a wasteful number, since it uses less digits than its factorization.

21360514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66369.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 21360514 is about 4621.7436103704. The cubic root of 21360514 is about 277.4622473870.

Adding to 21360514 its reverse (41506312), we get a palindrome (62866826).

The spelling of 21360514 in words is "twenty-one million, three hundred sixty thousand, five hundred fourteen".