21482986 has 8 divisors (see below), whose sum is σ = 36828000. Its totient is φ = 9206988.

The previous prime is 21482963. The next prime is 21482987. The reversal of 21482986 is 68928412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21482987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767236 + ... + 767263.

It is an arithmetic number, because the mean of its divisors is an integer number (4603500).

Almost surely, 2^21482986 is an apocalyptic number.

21482986 is a deficient number, since it is larger than the sum of its proper divisors (15345014).

21482986 is a wasteful number, since it uses less digits than its factorization.

21482986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534508.

The product of its digits is 55296, while the sum is 40.

The square root of 21482986 is about 4634.9742178355. The cubic root of 21482986 is about 277.9915201940.

The spelling of 21482986 in words is "twenty-one million, four hundred eighty-two thousand, nine hundred eighty-six".