216772492 has 24 divisors (see below), whose sum is σ = 390375216. Its totient is φ = 105248448.

The previous prime is 216772487. The next prime is 216772519. The reversal of 216772492 is 294277612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95523 + ... + 97765.

It is an arithmetic number, because the mean of its divisors is an integer number (16265634).

Almost surely, 2^216772492 is an apocalyptic number.

It is an amenable number.

216772492 is a deficient number, since it is larger than the sum of its proper divisors (173602724).

216772492 is a wasteful number, since it uses less digits than its factorization.

216772492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937 (or 2935 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 216772492 is about 14723.1957128879. The cubic root of 216772492 is about 600.7144193743.

The spelling of 216772492 in words is "two hundred sixteen million, seven hundred seventy-two thousand, four hundred ninety-two".