21466010 has 16 divisors (see below), whose sum is σ = 40672800. Its totient is φ = 8134416.

The previous prime is 21465979. The next prime is 21466021. The reversal of 21466010 is 1066412.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 56300 + ... + 56679.

It is an arithmetic number, because the mean of its divisors is an integer number (2542050).

Almost surely, 2^21466010 is an apocalyptic number.

21466010 is a deficient number, since it is larger than the sum of its proper divisors (19206790).

21466010 is a wasteful number, since it uses less digits than its factorization.

21466010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113005.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 21466010 is about 4633.1425620199. The cubic root of 21466010 is about 277.9182773088.

The spelling of 21466010 in words is "twenty-one million, four hundred sixty-six thousand, ten".