21282614 has 4 divisors (see below), whose sum is σ = 31923924. Its totient is φ = 10641306.

The previous prime is 21282601. The next prime is 21282629. The reversal of 21282614 is 41628212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5320652 + ... + 5320655.

It is an arithmetic number, because the mean of its divisors is an integer number (7980981).

Almost surely, 2^21282614 is an apocalyptic number.

21282614 is a deficient number, since it is larger than the sum of its proper divisors (10641310).

21282614 is a wasteful number, since it uses less digits than its factorization.

21282614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10641309.

The product of its digits is 1536, while the sum is 26.

The square root of 21282614 is about 4613.3083573505. The cubic root of 21282614 is about 277.1245426915.

The spelling of 21282614 in words is "twenty-one million, two hundred eighty-two thousand, six hundred fourteen".