216416376 has 48 divisors (see below), whose sum is σ = 639414360. Its totient is φ = 65580480.

The previous prime is 216416353. The next prime is 216416383. The reversal of 216416376 is 673614612.

It is a happy number.

216416376 is a `hidden beast` number, since 2 + 1 + 641 + 6 + 3 + 7 + 6 = 666.

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

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

It is a self number, because there is not a number n which added to its sum of digits gives 216416376.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135835 + ... + 137418.

Almost surely, 2^216416376 is an apocalyptic number.

It is an amenable number.

216416376 is an abundant number, since it is smaller than the sum of its proper divisors (422997984).

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

216416376 is a wasteful number, since it uses less digits than its factorization.

216416376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273276 (or 273269 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 216416376 is about 14711.0970359114. The cubic root of 216416376 is about 600.3852858717.

The spelling of 216416376 in words is "two hundred sixteen million, four hundred sixteen thousand, three hundred seventy-six".