216200520 has 48 divisors (see below), whose sum is σ = 702652860. Its totient is φ = 57653376.

The previous prime is 216200513. The next prime is 216200533. The reversal of 216200520 is 25002612.

216200520 is a `hidden beast` number, since 21 + 620 + 0 + 5 + 20 = 666.

216200520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 214505316 + 1695204 = 14646^2 + 1302^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 216200493 and 216200502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299919 + ... + 300638.

Almost surely, 2^216200520 is an apocalyptic number.

216200520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216200520 is an abundant number, since it is smaller than the sum of its proper divisors (486452340).

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

216200520 is a wasteful number, since it uses less digits than its factorization.

216200520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600574 (or 600567 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 216200520 is about 14703.7587031344. The cubic root of 216200520 is about 600.1856092428.

The spelling of 216200520 in words is "two hundred sixteen million, two hundred thousand, five hundred twenty".