216539202 has 16 divisors (see below), whose sum is σ = 472449312. Its totient is φ = 65617920.

The previous prime is 216539189. The next prime is 216539221. The reversal of 216539202 is 202935612.

216539202 is digitally balanced in base 3, because in such base 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 216539202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640383 + ... + 1640514.

It is an arithmetic number, because the mean of its divisors is an integer number (29528082).

Almost surely, 2^216539202 is an apocalyptic number.

216539202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216539202 is an abundant number, since it is smaller than the sum of its proper divisors (255910110).

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

216539202 is a wasteful number, since it uses less digits than its factorization.

216539202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280913.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 216539202 is about 14715.2710474527. The cubic root of 216539202 is about 600.4988462502.

The spelling of 216539202 in words is "two hundred sixteen million, five hundred thirty-nine thousand, two hundred two".