21414308 has 12 divisors (see below), whose sum is σ = 37762032. Its totient is φ = 10625160.

The previous prime is 21414299. The next prime is 21414313. The reversal of 21414308 is 80341412.

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, 19910 + ... + 20957.

It is an arithmetic number, because the mean of its divisors is an integer number (3146836).

Almost surely, 2^21414308 is an apocalyptic number.

It is an amenable number.

21414308 is a deficient number, since it is larger than the sum of its proper divisors (16347724).

21414308 is a wasteful number, since it uses less digits than its factorization.

21414308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41002 (or 41000 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 21414308 is about 4627.5596160395. The cubic root of 21414308 is about 277.6949710626.

The spelling of 21414308 in words is "twenty-one million, four hundred fourteen thousand, three hundred eight".