21014168 has 16 divisors (see below), whose sum is σ = 45030480. Its totient is φ = 9006048.

The previous prime is 21014167. The next prime is 21014179. The reversal of 21014168 is 86141012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014167) 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, 187571 + ... + 187682.

It is an arithmetic number, because the mean of its divisors is an integer number (2814405).

Almost surely, 2^21014168 is an apocalyptic number.

21014168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21014168 is an abundant number, since it is smaller than the sum of its proper divisors (24016312).

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

21014168 is a wasteful number, since it uses less digits than its factorization.

21014168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375266 (or 375262 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 21014168 is about 4584.1212898439. The cubic root of 21014168 is about 275.9544488293.

The spelling of 21014168 in words is "twenty-one million, fourteen thousand, one hundred sixty-eight".