220705308 has 18 divisors (see below), whose sum is σ = 557894064. Its totient is φ = 73568424.

The previous prime is 220705297. The next prime is 220705321. The reversal of 220705308 is 803507022.

220705308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3065316 + ... + 3065387.

Almost surely, 2^220705308 is an apocalyptic number.

It is an amenable number.

220705308 is an abundant number, since it is smaller than the sum of its proper divisors (337188756).

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

220705308 is a wasteful number, since it uses less digits than its factorization.

220705308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130713 (or 6130708 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 220705308 is about 14856.1538764244. The cubic root of 220705308 is about 604.3255083602.

The spelling of 220705308 in words is "two hundred twenty million, seven hundred five thousand, three hundred eight".