220866424 has 16 divisors (see below), whose sum is σ = 432130320. Its totient is φ = 105631680.

The previous prime is 220866379. The next prime is 220866427. The reversal of 220866424 is 424668022.

220866424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 220866424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220866427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599997 + ... + 600364.

It is an arithmetic number, because the mean of its divisors is an integer number (27008145).

Almost surely, 2^220866424 is an apocalyptic number.

It is an amenable number.

220866424 is a deficient number, since it is larger than the sum of its proper divisors (211263896).

220866424 is a wasteful number, since it uses less digits than its factorization.

220866424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200390 (or 1200386 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 220866424 is about 14861.5754211995. The cubic root of 220866424 is about 604.4725261587.

The spelling of 220866424 in words is "two hundred twenty million, eight hundred sixty-six thousand, four hundred twenty-four".