216412355 has 8 divisors (see below), whose sum is σ = 268650000. Its totient is φ = 167159776.

The previous prime is 216412351. The next prime is 216412381. The reversal of 216412355 is 553214612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216412355 - 2² = 216412351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (216412351) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 746105 + ... + 746394.

It is an arithmetic number, because the mean of its divisors is an integer number (33581250).

Almost surely, 2^216412355 is an apocalyptic number.

216412355 is a deficient number, since it is larger than the sum of its proper divisors (52237645).

216412355 is a wasteful number, since it uses less digits than its factorization.

216412355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492533.

The product of its digits is 7200, while the sum is 29.

The square root of 216412355 is about 14710.9603697379. The cubic root of 216412355 is about 600.3815674775.

Adding to 216412355 its reverse (553214612), we get a palindrome (769626967).

The spelling of 216412355 in words is "two hundred sixteen million, four hundred twelve thousand, three hundred fifty-five".