216196924 has 24 divisors (see below), whose sum is σ = 383056128. Its totient is φ = 106758960.

The previous prime is 216196921. The next prime is 216196933. The reversal of 216196924 is 429691612.

It is a super-2 number, since 2×216196924² = 93482219894123552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216196921) 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, 197619 + ... + 198709.

It is an arithmetic number, because the mean of its divisors is an integer number (15960672).

Almost surely, 2^216196924 is an apocalyptic number.

It is an amenable number.

216196924 is a deficient number, since it is larger than the sum of its proper divisors (166859204).

216196924 is a wasteful number, since it uses less digits than its factorization.

216196924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1663 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 216196924 is about 14703.6364209674. The cubic root of 216196924 is about 600.1822816538.

The spelling of 216196924 in words is "two hundred sixteen million, one hundred ninety-six thousand, nine hundred twenty-four".