21484182 has 8 divisors (see below), whose sum is σ = 42968376. Its totient is φ = 7161392.

The previous prime is 21484163. The next prime is 21484187. The reversal of 21484182 is 28148412.

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

21484182 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21484187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1790343 + ... + 1790354.

It is an arithmetic number, because the mean of its divisors is an integer number (5371047).

Almost surely, 2^21484182 is an apocalyptic number.

21484182 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21484182 is a wasteful number, since it uses less digits than its factorization.

21484182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580702.

The product of its digits is 4096, while the sum is 30.

The square root of 21484182 is about 4635.1032350963. The cubic root of 21484182 is about 277.9966788762.

The spelling of 21484182 in words is "twenty-one million, four hundred eighty-four thousand, one hundred eighty-two".