21014016 has 40 divisors (see below), whose sum is σ = 55986744. Its totient is φ = 7004160.

The previous prime is 21013997. The next prime is 21014041. The reversal of 21014016 is 61041012.

It is a junction number, because it is equal to n+sod(n) for n = 21013986 and 21014004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5305 + ... + 8376.

Almost surely, 2^21014016 is an apocalyptic number.

It is an amenable number.

21014016 is an abundant number, since it is smaller than the sum of its proper divisors (34972728).

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

21014016 is an equidigital number, since it uses as much as digits as its factorization.

21014016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13702 (or 13686 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 21014016 is about 4584.1047108459. The cubic root of 21014016 is about 275.9537834818.

Adding to 21014016 its reverse (61041012), we get a palindrome (82055028).

The spelling of 21014016 in words is "twenty-one million, fourteen thousand, sixteen".