21068622 has 24 divisors (see below), whose sum is σ = 45765720. Its totient is φ = 7004880.

The previous prime is 21068617. The next prime is 21068653. The reversal of 21068622 is 22686012.

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, 7029 + ... + 9567.

It is an arithmetic number, because the mean of its divisors is an integer number (1906905).

Almost surely, 2^21068622 is an apocalyptic number.

21068622 is an abundant number, since it is smaller than the sum of its proper divisors (24697098).

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

21068622 is a wasteful number, since it uses less digits than its factorization.

21068622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008 (or 3005 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 21068622 is about 4590.0568623929. The cubic root of 21068622 is about 276.1926034328.

The spelling of 21068622 in words is "twenty-one million, sixty-eight thousand, six hundred twenty-two".