21114568 has 16 divisors (see below), whose sum is σ = 40660380. Its totient is φ = 10271808.

The previous prime is 21114563. The next prime is 21114571. The reversal of 21114568 is 86541112.

It can be written as a sum of positive squares in 2 ways, for example, as 20412324 + 702244 = 4518^2 + 838^2 .

It is not an unprimeable number, because it can be changed into a prime (21114563) 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, 35371 + ... + 35962.

Almost surely, 2^21114568 is an apocalyptic number.

It is an amenable number.

21114568 is a deficient number, since it is larger than the sum of its proper divisors (19545812).

21114568 is a wasteful number, since it uses less digits than its factorization.

21114568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71376 (or 71372 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 21114568 is about 4595.0590855831. The cubic root of 21114568 is about 276.3932293030.

The spelling of 21114568 in words is "twenty-one million, one hundred fourteen thousand, five hundred sixty-eight".