216780852 has 24 divisors (see below), whose sum is σ = 506268000. Its totient is φ = 72196576.

The previous prime is 216780833. The next prime is 216780857. The reversal of 216780852 is 258087612.

216780852 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 216780852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216780857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7399 + ... + 22097.

It is an arithmetic number, because the mean of its divisors is an integer number (21094500).

Almost surely, 2^216780852 is an apocalyptic number.

It is an amenable number.

216780852 is an abundant number, since it is smaller than the sum of its proper divisors (289487148).

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

216780852 is a wasteful number, since it uses less digits than its factorization.

216780852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15935 (or 15933 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 216780852 is about 14723.4796159060. The cubic root of 216780852 is about 600.7221416149.

The spelling of 216780852 in words is "two hundred sixteen million, seven hundred eighty thousand, eight hundred fifty-two".