216348084 has 30 divisors (see below), whose sum is σ = 565577474. Its totient is φ = 72115920.

The previous prime is 216348073. The next prime is 216348089. The reversal of 216348084 is 480843612.

It can be written as a sum of positive squares in only one way, i.e., 184199184 + 32148900 = 13572^2 + 5670^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216348089) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 333547 + ... + 334194.

Almost surely, 2^216348084 is an apocalyptic number.

It is an amenable number.

216348084 is an abundant number, since it is smaller than the sum of its proper divisors (349229390).

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

216348084 is a wasteful number, since it uses less digits than its factorization.

216348084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667757 (or 667746 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 216348084 is about 14708.7757478316. The cubic root of 216348084 is about 600.3221270260.

The spelling of 216348084 in words is "two hundred sixteen million, three hundred forty-eight thousand, eighty-four".