216395046 has 48 divisors (see below), whose sum is σ = 540094464. Its totient is φ = 61335792.

The previous prime is 216395033. The next prime is 216395083. The reversal of 216395046 is 640593612.

It is a happy number.

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 Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 216395046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9241 + ... + 22763.

It is an arithmetic number, because the mean of its divisors is an integer number (11251968).

Almost surely, 2^216395046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216395046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270047232).

216395046 is an abundant number, since it is smaller than the sum of its proper divisors (323699418).

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

216395046 is a wasteful number, since it uses less digits than its factorization.

216395046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13665 (or 13662 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 216395046 is about 14710.3720551181. The cubic root of 216395046 is about 600.3655605639.

The spelling of 216395046 in words is "two hundred sixteen million, three hundred ninety-five thousand, forty-six".