216755792 has 40 divisors (see below), whose sum is σ = 460149120. Its totient is φ = 98094080.

The previous prime is 216755789. The next prime is 216755801. The reversal of 216755792 is 297557612.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 39488 + ... + 44640.

It is an arithmetic number, because the mean of its divisors is an integer number (11503728).

Almost surely, 2^216755792 is an apocalyptic number.

216755792 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216755792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230074560).

216755792 is an abundant number, since it is smaller than the sum of its proper divisors (243393328).

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

216755792 is a wasteful number, since it uses less digits than its factorization.

216755792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411 (or 5405 counting only the distinct ones).

The product of its digits is 264600, while the sum is 44.

The square root of 216755792 is about 14722.6285696543. The cubic root of 216755792 is about 600.6989927730.

The spelling of 216755792 in words is "two hundred sixteen million, seven hundred fifty-five thousand, seven hundred ninety-two".