216294560 has 24 divisors (see below), whose sum is σ = 510996276. Its totient is φ = 86517760.

The previous prime is 216294523. The next prime is 216294571. The reversal of 216294560 is 65492612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 202663696 + 13630864 = 14236^2 + 3692^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 216294560.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675761 + ... + 676080.

Almost surely, 2^216294560 is an apocalyptic number.

216294560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216294560 is an abundant number, since it is smaller than the sum of its proper divisors (294701716).

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

216294560 is a wasteful number, since it uses less digits than its factorization.

216294560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351856 (or 1351848 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 216294560 is about 14706.9561772652. The cubic root of 216294560 is about 600.2726168554.

The spelling of 216294560 in words is "two hundred sixteen million, two hundred ninety-four thousand, five hundred sixty".