21484134 has 24 divisors (see below), whose sum is σ = 53199120. Its totient is φ = 6138288.

The previous prime is 21484121. The next prime is 21484163. The reversal of 21484134 is 43148412.

It is a junction number, because it is equal to n+sod(n) for n = 21484098 and 21484107.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 85129 + ... + 85380.

It is an arithmetic number, because the mean of its divisors is an integer number (2216630).

Almost surely, 2^21484134 is an apocalyptic number.

21484134 is an abundant number, since it is smaller than the sum of its proper divisors (31714986).

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

21484134 is a wasteful number, since it uses less digits than its factorization.

21484134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170524 (or 170521 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 21484134 is about 4635.0980572152. The cubic root of 21484134 is about 277.9964718425.

It can be divided in two parts, 214 and 84134, that added together give a palindrome (84348).

The spelling of 21484134 in words is "twenty-one million, four hundred eighty-four thousand, one hundred thirty-four".