21714208 has 48 divisors (see below), whose sum is σ = 45130176. Its totient is φ = 10264320.

The previous prime is 21714197. The next prime is 21714223. The reversal of 21714208 is 80241712.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119878 + ... + 120058.

It is an arithmetic number, because the mean of its divisors is an integer number (940212).

Almost surely, 2^21714208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21714208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22565088).

21714208 is an abundant number, since it is smaller than the sum of its proper divisors (23415968).

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

21714208 is a wasteful number, since it uses less digits than its factorization.

21714208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 21714208 is about 4659.8506413833. The cubic root of 21714208 is about 278.9853068833.

The spelling of 21714208 in words is "twenty-one million, seven hundred fourteen thousand, two hundred eight".