216993348 has 144 divisors (see below), whose sum is σ = 655916352. Its totient is φ = 59616000.

The previous prime is 216993323. The next prime is 216993353. The reversal of 216993348 is 843399612.

It is a happy number.

216993348 is a `hidden beast` number, since 216 + 9 + 93 + 348 = 666.

216993348 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216993348² = 94172226152498208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 313683 + ... + 314373.

Almost surely, 2^216993348 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 216993348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327958176).

216993348 is an abundant number, since it is smaller than the sum of its proper divisors (438923004).

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

216993348 is a wasteful number, since it uses less digits than its factorization.

216993348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 781 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 216993348 is about 14730.6940773339. The cubic root of 216993348 is about 600.9183603068.

The spelling of 216993348 in words is "two hundred sixteen million, nine hundred ninety-three thousand, three hundred forty-eight".