21014368 has 24 divisors (see below), whose sum is σ = 41655600. Its totient is φ = 10435200.

The previous prime is 21014351. The next prime is 21014381. The reversal of 21014368 is 86341012.

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, 2658 + ... + 7006.

It is an arithmetic number, because the mean of its divisors is an integer number (1735650).

Almost surely, 2^21014368 is an apocalyptic number.

It is an amenable number.

21014368 is a deficient number, since it is larger than the sum of its proper divisors (20641232).

21014368 is a wasteful number, since it uses less digits than its factorization.

21014368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510 (or 4502 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 21014368 is about 4584.1431042235. The cubic root of 21014368 is about 275.9553242818.

The spelling of 21014368 in words is "twenty-one million, fourteen thousand, three hundred sixty-eight".