216748992 has 28 divisors (see below), whose sum is σ = 573482216. Its totient is φ = 72249600.

The previous prime is 216748991. The next prime is 216749003. The reversal of 216748992 is 299847612.

216748992 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 (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216748991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564259 + ... + 564642.

Almost surely, 2^216748992 is an apocalyptic number.

It is an amenable number.

216748992 is an abundant number, since it is smaller than the sum of its proper divisors (356733224).

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

216748992 is a wasteful number, since it uses less digits than its factorization.

216748992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128916 (or 1128906 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 216748992 is about 14722.3976308209. The cubic root of 216748992 is about 600.6927110557.

The spelling of 216748992 in words is "two hundred sixteen million, seven hundred forty-eight thousand, nine hundred ninety-two".