220823560 has 16 divisors (see below), whose sum is σ = 496853100. Its totient is φ = 88329408.

The previous prime is 220823521. The next prime is 220823563. The reversal of 220823560 is 65328022.

It can be written as a sum of positive squares in 2 ways, for example, as 215561124 + 5262436 = 14682^2 + 2294^2 .

It is not an unprimeable number, because it can be changed into a prime (220823563) 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, 2760255 + ... + 2760334.

Almost surely, 2^220823560 is an apocalyptic number.

220823560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220823560 is an abundant number, since it is smaller than the sum of its proper divisors (276029540).

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

220823560 is a wasteful number, since it uses less digits than its factorization.

220823560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520600 (or 5520596 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 220823560 is about 14860.1332430096. The cubic root of 220823560 is about 604.4334198878.

The spelling of 220823560 in words is "two hundred twenty million, eight hundred twenty-three thousand, five hundred sixty".