21014704 has 20 divisors (see below), whose sum is σ = 41017464. Its totient is φ = 10429568.

The previous prime is 21014701. The next prime is 21014713. The reversal of 21014704 is 40741012.

It is not an unprimeable number, because it can be changed into a prime (21014701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2602 + ... + 6985.

Almost surely, 2^21014704 is an apocalyptic number.

It is an amenable number.

21014704 is a deficient number, since it is larger than the sum of its proper divisors (20002760).

21014704 is a wasteful number, since it uses less digits than its factorization.

21014704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9732 (or 9726 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 21014704 is about 4584.1797521476. The cubic root of 21014704 is about 275.9567950294.

Adding to 21014704 its reverse (40741012), we get a palindrome (61755716).

The spelling of 21014704 in words is "twenty-one million, fourteen thousand, seven hundred four".