21852382 has 16 divisors (see below), whose sum is σ = 33269760. Its totient is φ = 10763928.

The previous prime is 21852379. The next prime is 21852401. The reversal of 21852382 is 28325812.

21852382 is nontrivially palindromic in base 5.

It is a congruent 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, 57469 + ... + 57847.

It is an arithmetic number, because the mean of its divisors is an integer number (2079360).

Almost surely, 2^21852382 is an apocalyptic number.

21852382 is a deficient number, since it is larger than the sum of its proper divisors (11417378).

21852382 is a wasteful number, since it uses less digits than its factorization.

21852382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735.

The product of its digits is 7680, while the sum is 31.

The square root of 21852382 is about 4674.6531422128. The cubic root of 21852382 is about 279.5758117788.

The spelling of 21852382 in words is "twenty-one million, eight hundred fifty-two thousand, three hundred eighty-two".