216472392 has 64 divisors (see below), whose sum is σ = 605385600. Its totient is φ = 71668800.

The previous prime is 216472379. The next prime is 216472427. The reversal of 216472392 is 293274612.

216472392 is a `hidden beast` number, since 2 + 1 + 647 + 2 + 3 + 9 + 2 = 666.

216472392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29298 + ... + 35934.

It is an arithmetic number, because the mean of its divisors is an integer number (9459150).

Almost surely, 2^216472392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216472392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302692800).

216472392 is an abundant number, since it is smaller than the sum of its proper divisors (388913208).

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

216472392 is a wasteful number, since it uses less digits than its factorization.

216472392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6803 (or 6793 counting only the distinct ones).

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

The square root of 216472392 is about 14713.0007816217. Note that the first 3 decimals coincide. The cubic root of 216472392 is about 600.4370815223.

The spelling of 216472392 in words is "two hundred sixteen million, four hundred seventy-two thousand, three hundred ninety-two".