216434968 has 16 divisors (see below), whose sum is σ = 423460080. Its totient is φ = 103512288.

The previous prime is 216434923. The next prime is 216434969. The reversal of 216434968 is 869434612.

It is a happy number.

It is a super-2 number, since 2×216434968² = 93688190746322048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216434969) 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, 587955 + ... + 588322.

It is an arithmetic number, because the mean of its divisors is an integer number (26466255).

Almost surely, 2^216434968 is an apocalyptic number.

It is an amenable number.

216434968 is a deficient number, since it is larger than the sum of its proper divisors (207025112).

216434968 is a wasteful number, since it uses less digits than its factorization.

216434968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176306 (or 1176302 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 216434968 is about 14711.7289262683. The cubic root of 216434968 is about 600.4024781067.

The spelling of 216434968 in words is "two hundred sixteen million, four hundred thirty-four thousand, nine hundred sixty-eight".