21466932 has 12 divisors (see below), whose sum is σ = 50089536. Its totient is φ = 7155640.

The previous prime is 21466909. The next prime is 21466957. The reversal of 21466932 is 23966412.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 21466893 and 21466902.

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 3 ways as a sum of consecutive naturals, for example, 894444 + ... + 894467.

It is an arithmetic number, because the mean of its divisors is an integer number (4174128).

Almost surely, 2^21466932 is an apocalyptic number.

It is an amenable number.

21466932 is an abundant number, since it is smaller than the sum of its proper divisors (28622604).

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

21466932 is a wasteful number, since it uses less digits than its factorization.

21466932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788918 (or 1788916 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 21466932 is about 4633.2420614511. The cubic root of 21466932 is about 277.9222562656.

The spelling of 21466932 in words is "twenty-one million, four hundred sixty-six thousand, nine hundred thirty-two".