21836282 has 16 divisors (see below), whose sum is σ = 37131360. Its totient is φ = 9547632.

The previous prime is 21836273. The next prime is 21836323. The reversal of 21836282 is 28263812.

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, 21608 + ... + 22595.

It is an arithmetic number, because the mean of its divisors is an integer number (2320710).

Almost surely, 2^21836282 is an apocalyptic number.

21836282 is a deficient number, since it is larger than the sum of its proper divisors (15295078).

21836282 is a wasteful number, since it uses less digits than its factorization.

21836282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44237.

The product of its digits is 9216, while the sum is 32.

The square root of 21836282 is about 4672.9307720102. The cubic root of 21836282 is about 279.5071346517.

The spelling of 21836282 in words is "twenty-one million, eight hundred thirty-six thousand, two hundred eighty-two".