21433682 has 8 divisors (see below), whose sum is σ = 32462976. Its totient is φ = 10612692.

The previous prime is 21433681. The next prime is 21433703. The reversal of 21433682 is 28633412.

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 (21433681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51818 + ... + 52229.

It is an arithmetic number, because the mean of its divisors is an integer number (4057872).

Almost surely, 2^21433682 is an apocalyptic number.

21433682 is a deficient number, since it is larger than the sum of its proper divisors (11029294).

21433682 is a wasteful number, since it uses less digits than its factorization.

21433682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104152.

The product of its digits is 6912, while the sum is 29.

The square root of 21433682 is about 4629.6524707585. The cubic root of 21433682 is about 277.7786914222.

The spelling of 21433682 in words is "twenty-one million, four hundred thirty-three thousand, six hundred eighty-two".