216734028 has 24 divisors (see below), whose sum is σ = 577957632. Its totient is φ = 61923984.

The previous prime is 216734027. The next prime is 216734039. The reversal of 216734028 is 820437612.

216734028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 216734028.

It is not an unprimeable number, because it can be changed into a prime (216734027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290000 + ... + 1290167.

It is an arithmetic number, because the mean of its divisors is an integer number (24081568).

Almost surely, 2^216734028 is an apocalyptic number.

216734028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

216734028 is an abundant number, since it is smaller than the sum of its proper divisors (361223604).

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

216734028 is a wasteful number, since it uses less digits than its factorization.

216734028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580181 (or 2580179 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 216734028 is about 14721.8894167834. The cubic root of 216734028 is about 600.6788871196.

The spelling of 216734028 in words is "two hundred sixteen million, seven hundred thirty-four thousand, twenty-eight".