216011386 has 8 divisors (see below), whose sum is σ = 327045600. Its totient is φ = 106996188.

The previous prime is 216011381. The next prime is 216011407. The reversal of 216011386 is 683110612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (216011381) 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, 504486 + ... + 504913.

It is an arithmetic number, because the mean of its divisors is an integer number (40880700).

Almost surely, 2^216011386 is an apocalyptic number.

216011386 is a deficient number, since it is larger than the sum of its proper divisors (111034214).

216011386 is a wasteful number, since it uses less digits than its factorization.

216011386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009508.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 216011386 is about 14697.3258111808. The cubic root of 216011386 is about 600.0105424074.

Adding to 216011386 its reverse (683110612), we get a palindrome (899121998).

The spelling of 216011386 in words is "two hundred sixteen million, eleven thousand, three hundred eighty-six".