20468866 has 16 divisors (see below), whose sum is σ = 34576128. Its totient is φ = 9003600.

The previous prime is 20468863. The next prime is 20468869. The reversal of 20468866 is 66886402.

It is an interprime number because it is at equal distance from previous prime (20468863) and next prime (20468869).

It is not an unprimeable number, because it can be changed into a prime (20468863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14325 + ... + 15688.

It is an arithmetic number, because the mean of its divisors is an integer number (2161008).

Almost surely, 2^20468866 is an apocalyptic number.

20468866 is a deficient number, since it is larger than the sum of its proper divisors (14107262).

20468866 is a wasteful number, since it uses less digits than its factorization.

20468866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30057.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 20468866 is about 4524.2530875273. The cubic root of 20468866 is about 273.5465620844.

The spelling of 20468866 in words is "twenty million, four hundred sixty-eight thousand, eight hundred sixty-six".