216472212 has 72 divisors (see below), whose sum is σ = 598564512. Its totient is φ = 65419200.

The previous prime is 216472181. The next prime is 216472213. The reversal of 216472212 is 212274612.

216472212 is a `hidden beast` number, since 2 + 1 + 647 + 2 + 2 + 12 = 666.

216472212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216472213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261343 + ... + 262169.

It is an arithmetic number, because the mean of its divisors is an integer number (8313396).

Almost surely, 2^216472212 is an apocalyptic number.

216472212 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 216472212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299282256).

216472212 is an abundant number, since it is smaller than the sum of its proper divisors (382092300).

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

216472212 is a wasteful number, since it uses less digits than its factorization.

216472212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1504 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 216472212 is about 14712.9946645814. The cubic root of 216472212 is about 600.4369150981.

The spelling of 216472212 in words is "two hundred sixteen million, four hundred seventy-two thousand, two hundred twelve".