21484112 has 20 divisors (see below), whose sum is σ = 44827860. Its totient is φ = 9915648.

The previous prime is 21484097. The next prime is 21484121. The reversal of 21484112 is 21148412.

It can be written as a sum of positive squares in 2 ways, for example, as 1628176 + 19855936 = 1276^2 + 4456^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 51437 + ... + 51852.

It is an arithmetic number, because the mean of its divisors is an integer number (2241393).

Almost surely, 2^21484112 is an apocalyptic number.

It is an amenable number.

21484112 is an abundant number, since it is smaller than the sum of its proper divisors (23343748).

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

21484112 is a wasteful number, since it uses less digits than its factorization.

21484112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103310 (or 103304 counting only the distinct ones).

The product of its digits is 512, while the sum is 23.

The square root of 21484112 is about 4635.0956840178. The cubic root of 21484112 is about 277.9963769519.

The spelling of 21484112 in words is "twenty-one million, four hundred eighty-four thousand, one hundred twelve".