220809708 has 36 divisors (see below), whose sum is σ = 637895440. Its totient is φ = 63088416.

The previous prime is 220809707. The next prime is 220809709. The reversal of 220809708 is 807908022.

220809708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220809707) and next prime (220809709).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (220809707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437863 + ... + 438366.

Almost surely, 2^220809708 is an apocalyptic number.

220809708 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

220809708 is an abundant number, since it is smaller than the sum of its proper divisors (417085732).

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

220809708 is a wasteful number, since it uses less digits than its factorization.

220809708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876246 (or 876241 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 220809708 is about 14859.6671564339. The cubic root of 220809708 is about 604.4207811596.

The spelling of 220809708 in words is "two hundred twenty million, eight hundred nine thousand, seven hundred eight".