216412328 has 32 divisors (see below), whose sum is σ = 444636000. Its totient is φ = 97930560.

The previous prime is 216412327. The next prime is 216412351. The reversal of 216412328 is 823214612.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 216412328.

It is not an unprimeable number, because it can be changed into a prime (216412321) 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, 14783 + ... + 25521.

It is an arithmetic number, because the mean of its divisors is an integer number (13894875).

Almost surely, 2^216412328 is an apocalyptic number.

It is an amenable number.

216412328 is an abundant number, since it is smaller than the sum of its proper divisors (228223672).

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

216412328 is a wasteful number, since it uses less digits than its factorization.

216412328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10985 (or 10981 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 216412328 is about 14710.9594520548. The cubic root of 216412328 is about 600.3815425093.

The spelling of 216412328 in words is "two hundred sixteen million, four hundred twelve thousand, three hundred twenty-eight".