16220866 has 8 divisors (see below), whose sum is σ = 24459264. Its totient is φ = 8067780.

The previous prime is 16220807. The next prime is 16220881. The reversal of 16220866 is 66802261.

16220866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20850 + ... + 21613.

It is an arithmetic number, because the mean of its divisors is an integer number (3057408).

Almost surely, 2^16220866 is an apocalyptic number.

16220866 is a deficient number, since it is larger than the sum of its proper divisors (8238398).

16220866 is a wasteful number, since it uses less digits than its factorization.

16220866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42656.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 16220866 is about 4027.5136250545. The cubic root of 16220866 is about 253.1383891917.

The spelling of 16220866 in words is "sixteen million, two hundred twenty thousand, eight hundred sixty-six".