216986094 has 128 divisors (see below), whose sum is σ = 551577600. Its totient is φ = 62726400.

The previous prime is 216986059. The next prime is 216986101. The reversal of 216986094 is 490689612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1436919 + ... + 1437069.

It is an arithmetic number, because the mean of its divisors is an integer number (4309200).

Almost surely, 2^216986094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216986094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275788800).

216986094 is an abundant number, since it is smaller than the sum of its proper divisors (334591506).

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

216986094 is a wasteful number, since it uses less digits than its factorization.

216986094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 216986094 is about 14730.4478546988. The cubic root of 216986094 is about 600.9116640794.

It can be divided in two parts, 216 and 986094, that added together give a triangular number (986310 = T₁₄₀₄).

The spelling of 216986094 in words is "two hundred sixteen million, nine hundred eighty-six thousand, ninety-four".