216793190 has 16 divisors (see below), whose sum is σ = 391480128. Its totient is φ = 86438976.

The previous prime is 216793189. The next prime is 216793217. The reversal of 216793190 is 91397612.

It is a happy number.

It is a super-2 number, since 2×216793190² = 93998574460752200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31502 + ... + 37761.

It is an arithmetic number, because the mean of its divisors is an integer number (24467508).

Almost surely, 2^216793190 is an apocalyptic number.

216793190 is a deficient number, since it is larger than the sum of its proper divisors (174686938).

216793190 is a wasteful number, since it uses less digits than its factorization.

216793190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69583.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 216793190 is about 14723.8986005745. The cubic root of 216793190 is about 600.7335380230.

The spelling of 216793190 in words is "two hundred sixteen million, seven hundred ninety-three thousand, one hundred ninety".