21066092 has 12 divisors (see below), whose sum is σ = 36901536. Its totient is φ = 10522800.

The previous prime is 21066049. The next prime is 21066107. The reversal of 21066092 is 29066012.

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, 3842 + ... + 7542.

It is an arithmetic number, because the mean of its divisors is an integer number (3075128).

Almost surely, 2^21066092 is an apocalyptic number.

It is an amenable number.

21066092 is a deficient number, since it is larger than the sum of its proper divisors (15835444).

21066092 is a wasteful number, since it uses less digits than its factorization.

21066092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128 (or 5126 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 21066092 is about 4589.7812584044. The cubic root of 21066092 is about 276.1815475720.

The spelling of 21066092 in words is "twenty-one million, sixty-six thousand, ninety-two".