216084890 has 32 divisors (see below), whose sum is σ = 454861440. Its totient is φ = 72362304.

The previous prime is 216084877. The next prime is 216084901. The reversal of 216084890 is 98480612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32885 + ... + 38904.

It is an arithmetic number, because the mean of its divisors is an integer number (14214420).

Almost surely, 2^216084890 is an apocalyptic number.

216084890 is an abundant number, since it is smaller than the sum of its proper divisors (238776550).

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

216084890 is a wasteful number, since it uses less digits than its factorization.

216084890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71846.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 216084890 is about 14699.8261894486. The cubic root of 216084890 is about 600.0785915570.

The spelling of 216084890 in words is "two hundred sixteen million, eighty-four thousand, eight hundred ninety".