216040156 has 12 divisors (see below), whose sum is σ = 378191520. Its totient is φ = 107985440.

The previous prime is 216040141. The next prime is 216040159. The reversal of 216040156 is 651040612.

It is a self number, because there is not a number n which added to its sum of digits gives 216040156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216040159) 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, 9696 + ... + 22936.

It is an arithmetic number, because the mean of its divisors is an integer number (31515960).

Almost surely, 2^216040156 is an apocalyptic number.

It is an amenable number.

216040156 is a deficient number, since it is larger than the sum of its proper divisors (162151364).

216040156 is a wasteful number, since it uses less digits than its factorization.

216040156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17324 (or 17322 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 216040156 is about 14698.3045280740. The cubic root of 216040156 is about 600.0371791776.

Adding to 216040156 its reverse (651040612), we get a palindrome (867080768).

The spelling of 216040156 in words is "two hundred sixteen million, forty thousand, one hundred fifty-six".