216040908 has 24 divisors (see below), whose sum is σ = 504512512. Its totient is φ = 71954064.

The previous prime is 216040883. The next prime is 216040933. The reversal of 216040908 is 809040612.

It is an interprime number because it is at equal distance from previous prime (216040883) and next prime (216040933).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9141 + ... + 22707.

Almost surely, 2^216040908 is an apocalyptic number.

It is an amenable number.

216040908 is an abundant number, since it is smaller than the sum of its proper divisors (288471604).

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

216040908 is a wasteful number, since it uses less digits than its factorization.

216040908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14901 (or 14899 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 216040908 is about 14698.3301092335. The cubic root of 216040908 is about 600.0378753868.

The spelling of 216040908 in words is "two hundred sixteen million, forty thousand, nine hundred eight".