21304014 has 16 divisors (see below), whose sum is σ = 42653952. Its totient is φ = 7093688.

The previous prime is 21304001. The next prime is 21304027. The reversal of 21304014 is 41040312.

It is an interprime number because it is at equal distance from previous prime (21304001) and next prime (21304027).

It is a super-2 number, since 2×21304014² = 907722025024392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21303984 and 21304002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8377 + ... + 10619.

It is an arithmetic number, because the mean of its divisors is an integer number (2665872).

Almost surely, 2^21304014 is an apocalyptic number.

21304014 is an abundant number, since it is smaller than the sum of its proper divisors (21349938).

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

21304014 is a wasteful number, since it uses less digits than its factorization.

21304014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21304014 is about 4615.6271513197. The cubic root of 21304014 is about 277.2173959252.

Adding to 21304014 its reverse (41040312), we get a palindrome (62344326).

The spelling of 21304014 in words is "twenty-one million, three hundred four thousand, fourteen".