216263560 has 16 divisors (see below), whose sum is σ = 486593100. Its totient is φ = 86505408.

The previous prime is 216263513. The next prime is 216263573. The reversal of 216263560 is 65362612.

It can be written as a sum of positive squares in 2 ways, for example, as 214856964 + 1406596 = 14658^2 + 1186^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2703255 + ... + 2703334.

Almost surely, 2^216263560 is an apocalyptic number.

216263560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216263560 is an abundant number, since it is smaller than the sum of its proper divisors (270329540).

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

216263560 is a wasteful number, since it uses less digits than its factorization.

216263560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406600 (or 5406596 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 216263560 is about 14705.9022164572. The cubic root of 216263560 is about 600.2439378475.

The spelling of 216263560 in words is "two hundred sixteen million, two hundred sixty-three thousand, five hundred sixty".